Intro to Rigid Transformations
Students learn to name, signal and perform translations, reflections and rotations without a grid.
Animated Lessons
20 lessons, ready to teach
Each lesson comes with an animated PowerPoint that does the modeling for you, student pages, answer keys and a review game. $3 a lesson, or save with a whole unit. Then make as much extra practice as you need in IDV Worksheets.
Transformations and Congruence
Transforming Coordinate Points
Students translate, reflect and rotate points, then discover and write the coordinate rule for each move.
Rigid Transformations on the Coordinate Grid
Students translate, reflect and rotate figures on the grid, then write the image coordinates and the rule.
Series of Transformations
Students name, describe and check a series of translations, reflections and rotations on the grid.
Corresponding Properties
Students match corresponding points, sides and angles, then use them to prove congruence and find missing measures.
Exploring and Proving Congruency
Students define congruent, spot congruent figures, and prove or disprove congruence with rigid motions.
How to Dilate an Image
Students dilate figures about the origin and from any center, then watch rays from the center check their work.
Sequences of Transformations
Students combine rigid motions with dilations, find a dilation's center and scale factor, and decide congruent or similar.
All 8 Transformations and Congruence lessons
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Equations
Solving One-Step Equations
Students learn why inverse operations work, then solve one-step equations with negatives and fractions.
Solving Two-Step Equations
Students undo the number next to the variable first, then solve two-step equations with negatives and fractions.
Solving Three-Step Equations
Variables on both sides: students move the smaller variable term, then solve, including no-solution cases.
How to Solve Equations - Step-by-Step Tables
Students solve one-step, two-step and variables-on-both-sides equations in a fill-in table, one move per row.
Multi-Step Hanger Diagrams
Students solve hanger diagrams with x's on both sides, zero pairs and negatives, and write each step as an equation.
Solving Multi-Step Equations
Students combine like terms on each side first, then solve, including equations with no solution and with all solutions.
All 6 Equations lessons
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Systems of Equations
Solving Systems by Graphing
Students graph two lines, find and check where they cross, and tell one, no or infinitely many solutions apart.
Solving Systems by Setting Equations Equal
When both equations are solved for y, students set them equal, solve for x, then find y.
Solving Systems by Substitution
Students substitute one equation into the other, distribute, combine like terms, and solve for both variables.
Solving Systems by Elimination
Students add or subtract to eliminate a variable, then multiply one or both equations to make opposites.
Special Cases - No Solution and Infinitely Many
Students solve equations and systems that are always, never or once true, and see what that means for the lines.
Systems of Equations Word Problems
Students turn two pricing plans into equations, graph them, and find when the costs match and which deal is better.
All 6 Systems of Equations lessons
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