TIMath RSS Feed This week's lesson plan http://www.timath.com/ Spreading Doom Data Analysis & Statistics ... Students explore a geometric sequence that models the spread of the 2004 Mydoom virus. After finding a rule for the sequence, they apply it recursively to extend it and graph the resulting data as a scatterplot. Then they derive, evaluate, and graph an exponential function to model the data. http://www.timath.com/subject.html?aid=518 Permutations Permutations, Combinations & Probability ... This activity is an introduction to permutations. It includes an optional review on factorials and the Fundamental Counting Principle. Students are then led through the development of the formula for finding n objects taken n at a time and n objects taken r at a time. They are given several problems to solve. http://www.timath.com/subject.html?aid=520 Volume 3-Dimensional Geometry ... In this activity, students explore defining right and oblique three dimensional figures and calculating the volume for prisms, pyramids, cylinders, and cones. Students will use multiple representations to explore properties of area and volume. http://www.timath.com/subject.html?aid=522 Difference Between Two Proportions Sampling Distributions ... In this activity, students use confidence intervals to estimate the difference of two population proportions. First they find the intervals by calculating the critical value and the margin of error. Last, they determine the sample size when given a confidence interval and margin of error. http://www.timath.com/subject.html?aid=512 Which Garage Is Better Linear Algebra ... Students are to find the solution to a system of linear equations using technology. They are presented with two problems; music sales and parking lot fees. http://www.timath.com/subject.html?aid=514 Torricelli’s Law Applications of Integration ... In this activity, students develop and use differential equations which support their learning of both Torricelli’s Law for falling liquids and projectile motion. Using multiple representations, students derive the defining formulas, beginning with the velocity of escaping liquid through to the trajectory path of that fluid. http://www.timath.com/subject.html?aid=516 Spreading Doom Data Analysis & Statistics ... Students explore a geometric sequence that models the spread of the 2004 Mydoom virus. After finding a rule for the sequence, they apply it recursively to extend it and graph the resulting data as a scatterplot. Then they derive, evaluate, and graph an exponential function to model the data. http://www.timath.com/subject.html?aid=517 Permutations Permutations, Combinations & Probability ... This activity is an introduction to permutations. It includes an optional review on factorials and the Fundamental Counting Principle. Students are then led through the development of the formula for finding n objects taken n at a time and n objects taken r at a time. They are given several problems to solve. http://www.timath.com/subject.html?aid=519 Volume 3-Dimensional Geometry ... In this activity, students explore defining right and oblique three dimensional figures and calculating the volume for prisms, pyramids, cylinders, and cones. Students will use multiple representations to explore properties of area and volume. http://www.timath.com/subject.html?aid=521 Difference Between Two Proportions Sampling Distributions ... In this activity, students use confidence intervals to estimate the difference of two population proportions. First they find the intervals by calculating the critical value and the margin of error. Last, they determine the sample size when given a confidence interval and margin of error. http://www.timath.com/subject.html?aid=510 Which Garage Is Better Linear Algebra ... Students are to find the solution to a system of linear equations using technology. They are presented with two problems; music sales and parking lot fees. http://www.timath.com/subject.html?aid=513 Torricelli’s Law Applications of Integration ... In this activity, students develop and use differential equations which support their learning of both Torricelli’s Law for falling liquids and projectile motion. Using multiple representations, students derive the defining formulas, beginning with the velocity of escaping liquid through to the trajectory path of that fluid. http://www.timath.com/subject.html?aid=515 Simple Harmonic Motion Applications of Integration ... In this activity, students explore simple harmonic motion in terms of the motion on a swing. Students derive the defining formulas — first, beginning with the trigonometric relationship between time and displacement, and differentiation to the form for acceleration, and then by integration from acceleration back to displacement. http://www.timath.com/subject.html?aid=498 You Are What You Eat Data Analysis & Statistics ... In this activity, students are introduced to modeling linear data through an investigation of comparing grams of fat and calories in fast food hamburgers. Students will use multiple representations to explore aspects of the linear equation that models the data. http://www.timath.com/subject.html?aid=499 Exploring the Parabola Conics ... This activity explores the key features of the parabola, both geometrically and algebraically. A variety of interactive representations support student learning as they build their understanding of this important curve and its real world applications. http://www.timath.com/subject.html?aid=503 Candy Pieces Hypothesis Testing ... This activity introduces the statistics concept of hypothesis testing. Students will use a chi-square test for goodness-of-fit to determine if there is a significant difference between the proportions they find in the sample, and the proportions they would expect if the manufacturer produced equal proportions of each color. http://www.timath.com/subject.html?aid=505 Orbit of Jupiter Analytic Geometry ... This activity explores models for the elliptical orbit of Jupiter. Problem 1 reviews the geometric definition of an ellipse as students calculate a and b from the perihelion and aphelion of Jupiter. Problem 2 develops the concept of a parametric curve by using a data capture to discover the coordinate equations of an ellipse. http://www.timath.com/subject.html?aid=506 Perspective 3-Dimensional Geometry ... In this activity, students draw figures in one- and two-point perspective and compare and contrast the two types of drawings. They then create an isometric drawing and compare it to their drawings in perspective. http://www.timath.com/subject.html?aid=508 Simple Harmonic Motion Applications of Integration ... In this activity, students explore simple harmonic motion in terms of the motion on a swing. Students derive the defining formulas — first, beginning with the trigonometric relationship between time and displacement, and differentiation to the form for acceleration, and then by integration from acceleration back to displacement. http://www.timath.com/subject.html?aid=496 You Are What You Eat Data Analysis & Statistics ... In this activity, students are introduced to modeling linear data through an investigation of comparing grams of fat and calories in fast food hamburgers. Students will use multiple representations to explore aspects of the linear equation that models the data. http://www.timath.com/subject.html?aid=497 Exploring the Parabola Conics ... This activity explores the key features of the parabola, both geometrically and algebraically. A variety of interactive representations support student learning as they build their understanding of this important curve and its real world applications. http://www.timath.com/subject.html?aid=500 Orbit of Jupiter Analytic Geometry ... This activity explores models for the elliptical orbit of Jupiter. Problem 1 reviews the geometric definition of an ellipse as students calculate a and b from the perihelion and aphelion of Jupiter. Problem 2 develops the concept of a parametric curve by using a data capture to discover the coordinate equations of an ellipse. http://www.timath.com/subject.html?aid=502 Candy Pieces Hypothesis Testing ... This activity introduces the statistics concept of hypothesis testing. Students will use a chi-square test for goodness-of-fit to determine if there is a significant difference between the proportions they find in the sample, and the proportions they would expect if the manufacturer produced equal proportions of each color. http://www.timath.com/subject.html?aid=504 Perspective 3-Dimensional Geometry ... In this activity, students draw figures in one- and two-point perspective and compare and contrast the two types of drawings. They then create an isometric drawing and compare it to their drawings in perspective. http://www.timath.com/subject.html?aid=507 Bewildered Babies Data Analysis & Statistics ... Students test the limits of the combinations formula by applying it to a labeling situation. After making charts and using logic to list possible label arrangements, students compare their results with the output of the combinations formula and nCr command. http://www.timath.com/subject.html?aid=485 Estimating a Population Proportion Sampling Distributions ... In this activity, students find the confidence interval for a population proportion by first finding the critical value and the margin of error. Finally, they use two formulas for finding the required sample size for a survey, given a confidence interval and margin of error. http://www.timath.com/subject.html?aid=487 Constructing an Ellipse Analytic Geometry ... In this activity, students will explore two different methods for constructing an ellipse. Students discover that the sum of the distances from a point on the ellipse to its foci is always constant. This fact is then used as the basis for an algebraic derivation of the general equation for an ellipse centered at the origin. http://www.timath.com/subject.html?aid=488 Nonlinear Systems of Equations Conics ... In this activity, students see the many ways that certain types of graphs (linear/quadratic and quadratic/quadratic) can intersect each other and how many potential intersection points are possible. Then students look at the equations in a nonlinear system, state how many solutions are possible, and solve the system by graphing. http://www.timath.com/subject.html?aid=492 Angles and Arcs Circles ... In this activity, students will explore angles constructed in a circle and how their measures are related to the measures of the intercepted arcs. Then students will explore a figure which has an angle vertex either inside the circle (angles formed by chords) or outside the circle (angles formed by secants). http://www.timath.com/subject.html?aid=493 The Area Between Applications of Integration ... Students will use the TI-Nspire to find the area between two curves while determining the required amount of concrete needed for a winding pathway and stepping stones. http://www.timath.com/subject.html?aid=495 Estimating a Population ProportionSampling Distributions ... Students will use the TI-Nspire to find the area between two curves while determining the required amount of concrete needed for a winding pathway and stepping stones. http://www.timath.com/subject.html?aid=483 Bewildered Babies Data Analysis & Statistics ... Students test the limits of the combinations formula by applying it to a labeling situation. After making charts and using logic to list possible label arrangements, students compare their results with the output of the combinations formula and nCr command. http://www.timath.com/subject.html?aid=484 Constructing an Ellipse Analytic Geometry ... In this activity, students will explore two different methods for constructing an ellipse. Students discover that the sum of the distances from a point on the ellipse to its foci is always constant. This fact is then used as the basis for an algebraic derivation of the general equation for an ellipse centered at the origin. http://www.timath.com/subject.html?aid=486 Nonlinear Systems of Equations Conics ... In this activity, students see the many ways that certain types of graphs (linear/quadratic and quadratic/quadratic) can intersect each other and how many potential intersection points are possible. Then students look at the equations in a nonlinear system, state how many solutions are possible, and solve the system by graphing. http://www.timath.com/subject.html?aid=489 Angles and Arcs Circles ... In this activity, students will explore angles constructed in a circle and how their measures are related to the measures of the intercepted arcs. Then students will explore a figure which has an angle vertex either inside the circle (angles formed by chords) or outside the circle (angles formed by secants). http://www.timath.com/subject.html?aid=490 The Area Between Applications of Integration ... Students will use the TI-Nspire to find the area between two curves while determining the required amount of concrete needed for a winding pathway and stepping stones. http://www.timath.com/subject.html?aid=494 Intro to Central Limit Theorem Sampling Distributions ... In this activity, students discover the Central Limit Theorem by simulating rolls of two, four, and seven number cubes via the random number generator. They find sample means and standard deviations and construct histograms of the sample distributions. http://www.timath.com/subject.html?aid=469 Find Line of Best Fit Data Analysis & Statistics ... Students make a scatter plot of heart rate versus age data and draw lines of best fit using three different methods—by hand, using the upper and lower quartiles, and using the handheld’s regression feature. http://www.timath.com/subject.html?aid=473 Properties of an Ellipse Conics ... This activity is intended to provide students with an opportunity to discover a few interesting properties of an ellipse. The first property students will explore forms the basis of the definition of an ellipse, i.e., the set of all points such that the sum of the distances from these points to two fixed points is constant. http://www.timath.com/subject.html?aid=475 Integration by Substitution Techniques of Integration ... In this activity, students will explore methods for computing integrals of functions not in one of the standard forms. The focus here is upon the use of substitution to transform the given integral into a standard form. http://www.timath.com/subject.html?aid=477 Segments In Circles Circles ... In this activity, students will explore the relationships among segments created by two intersecting chords, and secant segments. Students will store variables and use both the automated and manual data capture features in a spreadsheet and write formulas in spreadsheets to confirm relationships among segments. http://www.timath.com/subject.html?aid=480 Ain’t No River Wide Enough Trigonometric Identities ... Students simulate the process a surveyor would use to measure the width of a river by measuring length on one side of the river and angles formed by various reference points. They then prove the Law of Sines and apply it to calculate the river’s width, proving that no river is too wide to be measured with trigonometry. http://www.timath.com/subject.html?aid=482 Intro to Central Limit Theorem Sampling Distributions ... In this activity, students discover the Central Limit Theorem by simulating rolls of two, four, and seven number cubes via the random number generator. They find sample means and standard deviations and construct histograms of the sample distributions. http://www.timath.com/subject.html?aid=468 Properties of an Ellipse Conics ... This activity is intended to provide students with an opportunity to discover a few interesting properties of an ellipse. The first property students will explore forms the basis of the definition of an ellipse, i.e., the set of all points such that the sum of the distances from these points to two fixed points is constant. http://www.timath.com/subject.html?aid=474 Find Line of Best Fit Data Analysis & Statistics ... Students make a scatter plot of heart rate versus age data and draw lines of best fit using three different methods—by hand, using the upper and lower quartiles, and using the handheld’s regression feature. http://www.timath.com/subject.html?aid=472 Integration by Substitution Techniques of Integration ... In this activity, students will explore methods for computing integrals of functions not in one of the standard forms. The focus here is upon the use of substitution to transform the given integral into a standard form. http://www.timath.com/subject.html?aid=478 Segments In Circles Circles ... In this activity, students will explore the relationships among segments created by two intersecting chords, and secant segments. Students will store variables and use both the automated and manual data capture features in a spreadsheet and write formulas in spreadsheets to confirm relationships among segments. http://www.timath.com/subject.html?aid=479 Ain’t No River Wide Enough Trigonometric Identities ... Students simulate the process a surveyor would use to measure the width of a river by measuring length on one side of the river and angles formed by various reference points. They then prove the Law of Sines and apply it to calculate the river’s width, proving that no river is too wide to be measured with trigonometry. http://www.timath.com/subject.html?aid=481 Proof of Identity Trigonometric Identities ... Students use graphs to verify the reciprocal identities. They then use the handheld’s manual graph manipulation feature to discover the negative angle, cofunction, and Pythagorean trigonometric identities. Geometric proofs of these identities are given as well. http://www.timath.com/subject.html?aid=463 Sampling Sampling ... In this activity, students learn about each of the four types of probability sampling methods and use the randInt command to find each kind of sample from a given population. For stratified sampling, students find both a proportionate and a disproportionate sample. http://www.timath.com/subject.html?aid=450 Law of Sine and Cosine Trigonometric Identities ... In this activity, students will explore the proofs of the Laws, investigate various cases where they are utilized, and apply them to solve problems. http://www.timath.com/subject.html?aid=454 Integration by Parts Techniques of Integration ... Students have explored the differential calculus through investigations of the methods of first principles, the product and quotient rules. In this activity the product rule becomes the basis for an integration method for more difficult integrals. http://www.timath.com/subject.html?aid=457 Box Plots & Histograms Data Analysis & Statistics ... Students create and explore a box plot and histogram for a data set. They then compare the two data displays by viewing them together and use the comparison to draw conclusions about the data. http://www.timath.com/subject.html?aid=462 Proof of Identity Trigonometric Identities ... Students use graphs to verify the reciprocal identities. They then use the handheld’s manual graph manipulation feature to discover the negative angle, cofunction, and Pythagorean trigonometric identities. Geometric proofs of these identities are given as well. http://www.timath.com/subject.html?aid=465 Area of a Circle Circles ... Students are introduced to capturing data to create a mathematical relationship between the area and radius of a circle. Students will explore the area of a circle numerically, graphically, and algebraically. http://www.timath.com/subject.html?aid=467 Area of a Circle Circles ... Students will begin this activity by exploring how the chord in a circle is related to its perpendicular bisector. Investigation will include measuring lengths and distances from the center of the circle. http://www.timath.com/subject.html?aid=12 Sampling Probability Sampling Methods ... In this activity, students learn about each of the four types of probability sampling methods and use the randInt command to find each kind of sample from a given population. For stratified sampling, students find both a proportionate and a disproportionate sample. http://www.timath.com/subject.html?aid=452 Law of Sine and Cosine Trigonometric Identities ... In this activity, students will explore the proofs of the Laws, investigate various cases where they are utilized, and apply them to solve problems. http://www.timath.com/subject.html?aid=453 Integration of Parts Techniques of Integration ... Students have explored the differential calculus through investigations of the methods of first principles, the product and quotient rules. In this activity the product rule becomes the basis for an integration method for more difficult integrals. http://www.timath.com/subject.html?aid=461 Box Plots & Histograms Data Analysis & Statistics ... Students create and explore a box plot and histogram for a data set. They then compare the two data displays by viewing them together and use the comparison to draw conclusions about the data. http://www.timath.com/subject.html?aid=460 Getting Triggy With It Trigonometric Functions & Equations ... Students systematically explore the effect of the coefficients on the graph of sine or cosine functions. Terminology describing the graph—amplitude, period, frequency, phase shift, baseline, and vertical offset—is introduced, then reinforced as the student calculates these values directly. http://www.timath.com/subject.html?aid=15 Double Tree Polynomials ... Students visually model the sequence 2^n for n = 1…8 by drawing line segments that represent a tree that doubles its height every year. They then extend the sequence backward though time over negative values for n. http://www.timath.com/subject.html?aid=8 Trigonometric Proofs Trigonometric Identities ... Students will perform trigonometric proofs and use the graphing capabilities of the handheld for verification. http://www.timath.com/subject.html?aid=13 Fundamental Theorem The Fundamental Theorem of Calculus ... This activity builds student comprehension of functions defined by a definite integral, where the independent variable is an upper limit of integration. Students are led to the brink of a discovery of the Fundamental Theorem of Calculus. http://www.timath.com/subject.html?aid=14 Fundamental Theorem The Fundamental Theorem of Calculus ... This activity builds student comprehension of functions defined by a definite integral, where the independent variable is an upper limit of integration. Students are led to the brink of a discovery of a discovery of the Fundamental Theorem of Calculus. http://www.timath.com/subject.html?aid=16 Chords and Circles Circles ... Students will begin this activity by exploring how the chord in a circle is related to its perpendicular bisector. Investigation will include measuring lengths and distances from the center of the circle. http://www.timath.com/subject.html?aid=18 Getting Triggy With It Trigonometric Functions & Equations ... Students systematically explore the effect of the coefficients on the graph of sine or cosine functions. Terminology describing the graph—amplitude, period, frequency, phase shift, baseline, and vertical offset—is introduced, then reinforced as the student calculates these values directly. http://www.timath.com/subject.html?aid=19 F Distribution Continuous Distributions and their Properties ... In this activity, students study the characteristics of the F distribution and discuss why the distribution is not symmetric (skewed right) and only has positive values. Students then use the Fcdf command to find probabilities and to confirm percentiles. http://www.timath.com/subject.html?aid=20 F Distribution Continuous Distributions and their Properties ... In this activity, students study the characteristics of the F distribution and discuss why the distribution is not symmetric (skewed right) and only has positive values. Students then use the Fcdf command to find probabilities and to confirm percentiles. http://www.timath.com/subject.html?aid=21 Double Tree Polynomials ... Students visually model the sequence 2^n for n = 1…8 by drawing line segments that represent a tree that doubles its height every year. They then extend the sequence backward though time over negative values for n. http://www.timath.com/subject.html?aid=9 Chords and Circles Circles ... Students will begin this activity by exploring how the chord in a circle is related to its perpendicular bisector. Investigation will include measuring lengths and distances from the center of the circle. http://www.timath.com/subject.html?aid=17 Trigonometric Proofs Trigonometric Identities ... Students will perform trigonometric proofs and use the graphing capabilities of the handheld for verification. http://www.timath.com/subject.html?aid=22 Triangle Inequalities Right Triangles & Trigonometric Ratios ... http://www.timath.com/subject.html?aid=441 Exponent Rules Polynomials ... http://www.timath.com/subject.html?aid=442 Triangle Inequalities Right Triangles & Trigonometric Ratios ... http://www.timath.com/subject.html?aid=443 Exponent Rules Polynomials ... http://www.timath.com/subject.html?aid=444 Solving Trigonometric Equations Trigonometric Functions & Equations ... http://www.timath.com/subject.html?aid=445 Solving Trigonometric Equations Trigonometric Functions & Equations ... http://www.timath.com/subject.html?aid=446 Investigating Special Triangles Right Triangles & Trigonometric Ratios ... http://www.timath.com/subject.html?aid=435 Special Right Triangles ... http://www.timath.com/subject.html?aid=436 Factoring Special Cases Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=437 Factoring Special Cases Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=438 Properties of Logarithms Exponential & Logarithmic Functions & Equations ... http://www.timath.com/subject.html?aid=439 Properties of Logarithms Exponential & Logarithmic Functions & Equations ... http://www.timath.com/subject.html?aid=440 The Pythagorean Theorem Right Triangles & Trigonometric Ratios ... http://www.timath.com/subject.html?aid=393 The Pythagorean Theorem Right Triangles & Trigonometric Ratios ... http://www.timath.com/subject.html?aid=430 Bridge on the River Quad Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=431 Evaluating Logarithms Exponential & Logarithmic Functions & Equations ... http://www.timath.com/subject.html?aid=432 Bridge on the River Quad Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=433 Evaluating Logarithms Exponential & Logarithmic Functions & Equations ... http://www.timath.com/subject.html?aid=434 The Geometric Mean Ratio, Proportion & Similarity ... http://www.timath.com/subject.html?aid=424 The Geometric Mean Ratio, Proportion & Similarity ... http://www.timath.com/subject.html?aid=425 Using Symmetry to Find the Vertex of a Parabola Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=426 Folding Parabolas Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=427 Exponential Growth Exponential & Logarithmic Functions ... http://www.timath.com/subject.html?aid=428 Exponential Growth Exponential & Logarithmic Functions ... http://www.timath.com/subject.html?aid=429 Midsegments of Triangles Ratio, Proportion & Similarity ... http://www.timath.com/subject.html?aid=418 Midsegments in a Triangle Ratio, Proportion & Similarity ... http://www.timath.com/subject.html?aid=419 Graphing Quadratic Functions Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=420 Living on the Edge Rational & Radical Functions & Equations ... http://www.timath.com/subject.html?aid=421 Living on the Edge Rational & Radical Functions & Equations ... http://www.timath.com/subject.html?aid=422 Graphing Quadratic Functions Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=423 Constructing Similar Triangles Ratio, Proportion & Similarity ... http://www.timath.com/subject.html?aid=412 Constructing Similar Triangles Ratio, Proportion & Similarity ... http://www.timath.com/subject.html?aid=413 The Impossible Task Linear Systems ... http://www.timath.com/subject.html?aid=414 The Impossible Task Linear Systems ... http://www.timath.com/subject.html?aid=415 Airport Impact Study Rational & Radical Functions & Equations ... http://www.timath.com/subject.html?aid=416 Airport Impact Study Rational & Radical Functions & Equations ... http://www.timath.com/subject.html?aid=417 Properties of Parallelograms Quadrilaterals and General Polygons ... http://www.timath.com/subject.html?aid=406 Properties of Parallelograms Quadrilaterals & General Polygons ... http://www.timath.com/subject.html?aid=407 Asymptotes and Zeros Rational and Radical Functions & Equations ... http://www.timath.com/subject.html?aid=408 Asymptotes and Zeros Rational and Radical Functions & Equations ... http://www.timath.com/subject.html?aid=409 How Many Solutions? Analyze change in various contexts ... http://www.timath.com/subject.html?aid=410 How Many Solutions? Linear Systems ... http://www.timath.com/subject.html?aid=411 Intersections Linear Systems ... http://www.timath.com/subject.html?aid=400 Understanding Solutions of Systems Using Tables and Graphs Linear Systems ... http://www.timath.com/subject.html?aid=401 Stacking Bricks Polynomials and Polynomial Equations ... http://www.timath.com/subject.html?aid=402 Properties of Trapezoids and Isosceles Trapezoids Quadrilaterals and General Polygons ... http://www.timath.com/subject.html?aid=403 Properties of Trapezoids and Kites Quadrilaterals & General Polygons ... http://www.timath.com/subject.html?aid=404 Stacking Bricks Polynomials & Polynomial Equations ... http://www.timath.com/subject.html?aid=405 Angles in a Quadrilateral Quadrilaterals and General Polygons ... http://www.timath.com/subject.html?aid=394 Angles in Polygons Quadrilaterals & General Polygons ... http://www.timath.com/subject.html?aid=395 Perpendicular Slopes Linear Functions ... http://www.timath.com/subject.html?aid=396 Perpendicular Slopes Linear Functions ... http://www.timath.com/subject.html?aid=397 Watch Your P's and Q's Polynomials and Polynomial Equations ... http://www.timath.com/subject.html?aid=398 Watch Your P's and Q's Polynomials and Polynomial Equations ... http://www.timath.com/subject.html?aid=399 Special Segments in Triangles Triangles and Their Centers ... http://www.timath.com/subject.html?aid=326 Special Segments in Triangles Triangles and Their Centers ... http://www.timath.com/subject.html?aid=389 Building Curves Polynomials & Polynomial Equations ... http://www.timath.com/subject.html?aid=390 Dinner Party Linear Functions ... http://www.timath.com/subject.html?aid=391 Dinner Party Linear Functions ... http://www.timath.com/subject.html?aid=392 Angle Bisectors in a Triangle Triangles and Their Centers ... http://www.timath.com/subject.html?aid=383 Angle Bisectors in a Triangle Triangles and Their Centers ... http://www.timath.com/subject.html?aid=384 Points & Lines & Slopes - Oh My! Linear Functions ... http://www.timath.com/subject.html?aid=385 Points & Lines & Slopes - Oh My! Linear Functions ... http://www.timath.com/subject.html?aid=386 Motorcycle Jump Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=387 Motorcycle Jump Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=388 Quadratic Regression with Transformation Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=377 Quadratic Regression Quadratic Functions & Equations ... http://www.timath.com/subject.html?aid=378 Exploring Linear Equations Functions & Relations ... http://www.timath.com/subject.html?aid=379 Graphs of Linear Functions Functions & Relations ... http://www.timath.com/subject.html?aid=380 Points on a Perpendicular Bisector Trianlges and Their Centers ... http://www.timath.com/subject.html?aid=381 Points on a Perpendicular Bisector Triangles and Their Centers ... http://www.timath.com/subject.html?aid=382 Algebra Nomograph Functions & Relations ... http://www.timath.com/subject.html?aid=376 The Hinge Theorems Triangles & Congruence ... http://www.timath.com/subject.html?aid=374 The Hinge Theorems Triangles & Congruence ... http://www.timath.com/subject.html?aid=375 Congruent Triangles Triangles & Congruence ... http://www.timath.com/subject.html?aid=368 Congruent Triangles Triangles & Congruence ... http://www.timath.com/subject.html?aid=369 Maximizing Your Efforts Linear Systems ... http://www.timath.com/subject.html?aid=370 Maximizing Your Efforts Linear Systems ... http://www.timath.com/subject.html?aid=371 Where's the Point? Functions & Relations ... http://www.timath.com/subject.html?aid=372 What's the Point? Functions & Relations ... http://www.timath.com/subject.html?aid=373 Triangle Sides & Angles Triangles & Congruence ... http://www.timath.com/subject.html?aid=338 Triangle Sides & Angles Triangles & Congruence ... http://www.timath.com/subject.html?aid=363 Cramer's Rule Linear Systems ... http://www.timath.com/subject.html?aid=364 Solving Systems Using Matrices Linear Systems ... http://www.timath.com/subject.html?aid=365 Absolutely! Linear Inequalities ... http://www.timath.com/subject.html?aid=366 Absolutely! Linear Inequalities ... http://www.timath.com/subject.html?aid=367 Interior & Exterior Angles of a Triangle Triangles & Congruence ... http://www.timath.com/subject.html?aid=357 Interior & Exterior Angles of a Triangle Triangles & Congruence ... http://www.timath.com/subject.html?aid=358 Linear Inequalities Linear Inequalities ... http://www.timath.com/subject.html?aid=359 Linear Inequalities Linear Inequalities ... http://www.timath.com/subject.html?aid=360 Transformers Matrices ... http://www.timath.com/subject.html?aid=361 Transformers Matrices ... http://www.timath.com/subject.html?aid=362 Conditional Statements Inductive & Deductive Reasoning ... http://www.timath.com/subject.html?aid=348 Conditional Statements Inductive & Deductive Reasoning ... http://www.timath.com/subject.html?aid=352 Introducing the Absolute Value Linear Equations ... http://www.timath.com/subject.html?aid=353 Introducing Absolute Value Linear Equations ... http://www.timath.com/subject.html?aid=354 Determining Area Matrices ... http://www.timath.com/subject.html?aid=355 Determining Area Matrices ... http://www.timath.com/subject.html?aid=356 Distances in the Coordinate Plane Points, Lines & Planes ... http://www.timath.com/subject.html?aid=342 Distances in the Coordinate Plane Points, Lines & Planes ... http://www.timath.com/subject.html?aid=346 Supertall Skyscrapers Linear Equations ... http://www.timath.com/subject.html?aid=347 Advanced Algebra Nomograph Sequences, Series, & Functions ... http://www.timath.com/subject.html?aid=349 Advanced Algebra Nomograph Sequences, Series, & Functions ... http://www.timath.com/subject.html?aid=350 Supertall Skyscrapers Linear Equations ... http://www.timath.com/subject.html?aid=351 Angle Relationships Points, Lines, & Planes ... http://www.timath.com/subject.html?aid=339 Parallel Lines Cut by a Transversal Points, Lines & Planes ... http://www.timath.com/subject.html?aid=340 One Step at a Time Linear Equations ... http://www.timath.com/subject.html?aid=341 Geometric Sequences & Series Sequences, Series, & Functions ... http://www.timath.com/subject.html?aid=343 Geometric Sequences & Series Sequences, Series, & Functions ... http://www.timath.com/subject.html?aid=344 One Step at a Time Linear Equations ... http://www.timath.com/subject.html?aid=345 Taxicab Geometry Points, Lines & Planes ... http://www.timath.com/subject.html?aid=328 Taxicab Geometry Points, Lines & Planes ... http://www.timath.com/subject.html?aid=329 Closure Tables From Arithmetic to Algebra ... http://www.timath.com/subject.html?aid=330 Closure Tables From Arithmetic to Algebra ... http://www.timath.com/subject.html?aid=335 Arithmetic Sequences & Series Sequences, Series, & Functions ... http://www.timath.com/subject.html?aid=336 Arithmetic Sequences & Series Sequences, Series, & Functions ... http://www.timath.com/subject.html?aid=337 Hot Air Balloon From Arithmetic to Algebra ... http://www.timath.com/subject.html?aid=325 Here's Looking at Euclid Numbers & Number Systems ... http://www.timath.com/subject.html?aid=327 Midpoints in the Coordinate Plane Points, Lines & Planes ... http://www.timath.com/subject.html?aid=331 Hot Air Balloon From Arithmetic to Algebra ... http://www.timath.com/subject.html?aid=332 Midpoints in the Coordinate Plane Points, Lines & Planes ... http://www.timath.com/subject.html?aid=333 Here's Looking at Euclid Numbers & Number Systems ... http://www.timath.com/subject.html?aid=334 Activity 25: The Euler Line Use Visualization ... http://www.timath.com/subject.html?aid=319 Activity 17: Guess My Coefficients Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=323 Activity 17: Compound Interest Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=324 Activity 24: The Converse of the Pythagorean Theorem Use Visualization ... http://www.timath.com/subject.html?aid=320 Activity 16: Simulating Coin Toss Probability Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=321 Activity 16: Expected Value Select and use appropriate statistical methods to analyze data ... http://www.timath.com/subject.html?aid=322 Activity 23: President Garfield's Proof of the Pythagorean Theorem Use Visualization ... http://www.timath.com/subject.html?aid=318 Activity 15: Inverse Variation Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=316 Activity 15: Finding Standard Deviation Select and use appropriate statistical methods to analyze data ... http://www.timath.com/subject.html?aid=317 Activity 22: The Geometric Mean Use Visualization ... http://www.timath.com/subject.html?aid=315 Activity 14: Pythagorean Theorem with Equation Solver Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=312 Activity 14: Asymptotes and Zeros of Rational Functions Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=314 Activity 21: The Pythagorean Theorem Part 2 Analyze Characteristics ... http://www.timath.com/subject.html?aid=313 Activity 13: Understanding Solutions of Systems Using Tables and Graphs Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=309 Activity 13: Solving Trigonometric Equations Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=311 Activity 20: The Pythagorean Theorem Part 1 Analyze Characteristics ... http://www.timath.com/subject.html?aid=307 Activity 12: Eyeing The Median-Median Line Select and use appropriate statistical methods to analyze data ... http://www.timath.com/subject.html?aid=308 Activity 12: Box Plots and Histograms Select and use appropriate statistical methods to analyze data ... http://www.timath.com/subject.html?aid=310 Activity 19: The Transformational Puppet Analyze Characteristics ... http://www.timath.com/subject.html?aid=306 Activity 11: Using Symmetry to Find the Vertex of a Parabola Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=304 Activity 11: Evaluating Logarithms on the TI-84 Plus Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=305 Activity 18: Constructing Similar Triangles Analyze Characteristics ... http://www.timath.com/subject.html?aid=301 Activity 10: Using Matrices to Enter Data and Perform Operations Select and use appropriate statistical methods to analyze data ... http://www.timath.com/subject.html?aid=302 Activity 10: Solving Systems Using Matrices- The Long Way and The Short Way Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=303 Activity 17: Properties of Trapezoids and Isosceles Trapezoids Analyze Characteristics ... http://www.timath.com/subject.html?aid=300 Activity 9: Introducing the Parabola Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=298 Activity 9: Geometric Sequences And Series Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=299 Activity 16: Constructing and Investigating Properties of a Rhombus Analyze Characteristics ... http://www.timath.com/subject.html?aid=297 Activity 8: Introducing the Absolute Value Function Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=295 Activity 8: End Behaviors of Polynomial Functions Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=296 Activity 15: Tests of Parallelograms Analyze Characteristics ... http://www.timath.com/subject.html?aid=290 Activity 7: Transformations in the Coordinate Plane Apply transformations and use symmetry to analyze mathematical situations ... http://www.timath.com/subject.html?aid=293 Activity 7: Population Growth with Calcumites Use mathematical models to represent and understand quantitative relationships ... http://www.timath.com/subject.html?aid=294 Activity 14: Properties of Parallelograms Analyze Characteristics ... http://www.timath.com/subject.html?aid=289 Activity 6: Investigating Laws of Exponents Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=291 Activity 6: Finite Differences Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=292 Activity 13: Constructing Regular Polygons Analyze Characteristics ... http://www.timath.com/subject.html?aid=288 Activity 5: A Boolean Look at Inequalities Represent and analyze mathematical situations and structures using algebraic symbols ... http://www.timath.com/subject.html?aid=286 Activity 5: What is the Inverse of a Function? Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=287 Activity 12: Investigating Special Triangles Analyze Characteristics ... http://www.timath.com/subject.html?aid=283 Activity 4: Finding a Line of Best Fit Select and use appropriate statistical methods to analyze data ... http://www.timath.com/subject.html?aid=284 Activity 4: Transforming Polynomial Functions Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=285 Activity 11: Exterior and Side-Angle Relationships Analyze Characteristics ... http://www.timath.com/subject.html?aid=272 Activity 3: Generating Recursive Sequences to Explore Linearity Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=270 Activity 3: Generating Recursive Sequences to Explore Exponential Patterns Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=271 Activity 10: Triangle Inequality Theorems Analyze Characteristics ... http://www.timath.com/subject.html?aid=282 Activity 2: Exploring Linear Equations Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=268 Activity 2: Maximizing Your Efforts Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=269 Activity 9: Circles and Chords Analyze Characteristics ... http://www.timath.com/subject.html?aid=281 Activity 1: Binomial Multiplication Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=266 Activity 1: Quadratic Regression with Transformation Graphing Understand patterns, relations and functions ... http://www.timath.com/subject.html?aid=267 Activity 8: ASA Triangle Congruence Analyze Characteristics ... http://www.timath.com/subject.html?aid=280 Activity 7: SAS Triangle Congruence Analyze Characteristics ... http://www.timath.com/subject.html?aid=279 Activity 6: SSS Triangle Congruence Analyze Characteristics ... http://www.timath.com/subject.html?aid=278 Activity 5: Copying an Angle Analyze Characteristics ... http://www.timath.com/subject.html?aid=277 Activity 4: Investigating the Triangle Inequality Analyze Characteristics ... http://www.timath.com/subject.html?aid=276 Activity 3: Constructing Equilateral Triangles Part 3 Analyze Characteristics ... http://www.timath.com/subject.html?aid=275 Activity 2: Discovering Properties of Isosceles Triangles Part B Analyze Characteristics ... http://www.timath.com/subject.html?aid=274 Activity 1: Constructing and Measuring Parts of a Triangle Part A Analyze Characteristics ... http://www.timath.com/subject.html?aid=273 Activity 25: Investigating Equations of Lines Analyze Characteristics ... http://www.timath.com/subject.html?aid=265 Activity 24: Reflecting a Triangle in the Coordinate Plane Analyze Characteristics ... http://www.timath.com/subject.html?aid=264 Activity 23: Slopes of Parallel and Perpendicular Lines Specify Locations ... http://www.timath.com/subject.html?aid=263 Activity 22: Inscribed Angles Intercepting the Same Arc Analyze Characteristics ... http://www.timath.com/subject.html?aid=262 Activity 21: Drawing a Line Tangent to a Circle Analyze Characteristics ... http://www.timath.com/subject.html?aid=261 Activity 20: Perpendicular Segments in a Circle Analyze Characteristics ... http://www.timath.com/subject.html?aid=260 Activity 19: Angles in a Quadrilateral Analyze Characteristics ... http://www.timath.com/subject.html?aid=259 Activity 18: Investigating Segments in a Quadrilateral Analyze Characteristics ... http://www.timath.com/subject.html?aid=258 Activity 17: Exploring the Centroid of a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=257 Activity 16: Investigating Segments in a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=256 Activity 15: Investigating Segments Lengths in a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=255 Activity 14: Investigating Segments in a Right Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=254 Activity 13: Circumscribing a Circle About a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=253 Activity 12: Inscribing a Circle in a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=252 Activity 11: Exploring the Diameter and Circumference of a Circle Analyze Characteristics ... http://www.timath.com/subject.html?aid=250 Activity 10: Exploring the Orthocenter of a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=249 Activity 9: Exploring the Circumcenter of a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=248 Activity 8: Exploring the Incenter of a Triangle Analyze Characteristics ... http://www.timath.com/subject.html?aid=251 Activity 7: Points on the Perpendicular Bisector of a Line Analyze Characteristics ... http://www.timath.com/subject.html?aid=247 Activity 6: Parallel Lines Cut By a Transversal Analyze Characteristics ... http://www.timath.com/subject.html?aid=246 Activity 5: Intersecting Lines and Vertical Angles Analyze Characteristics ... http://www.timath.com/subject.html?aid=245 Activity 4: Measuring Angles of a Triangle Use Visualization ... http://www.timath.com/subject.html?aid=244 Activity 3: Perpendicular Bisector of a Line Segment Analyze Characteristics ... http://www.timath.com/subject.html?aid=243 Activity 2: Constructing and Measuring an Angle Analyze Characteristics ... http://www.timath.com/subject.html?aid=242 Activity 1: Midpoint of a Segment Analyze Characteristics ... http://www.timath.com/subject.html?aid=239 Cabri Jr. 101 Exploring the Menus Analyze Characteristics ... http://www.timath.com/subject.html?aid=236 Cabri Jr. 101 Naming and Saving a File Analyze Characteristics ... http://www.timath.com/subject.html?aid=237 Cabri Jr. 101 Opening and Editing a File Analyze Characteristics ... http://www.timath.com/subject.html?aid=238 Cabri Jr. 101 Moving Figures Analyze Characteristics ... http://www.timath.com/subject.html?aid=240 Cabri Jr. 101 Labeling Points Analyze Characteristics ... http://www.timath.com/subject.html?aid=241