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- HSG-CO.A.1Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
- HSG-CO.A.2Represent transformations in the plane using, e.g., transparencies and geometry software; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not (e.g., translation versus horizontal stretch).
- HSG-CO.A.3Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.
- HSG-CO.A.4Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.
- HSG-CO.A.5Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using, e.g., graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto another.

Introduction to Transformations

Geometry

» Unit:

Transformations

Big Idea:Students are introduced to the notion of rigid and non-rigid motion, including translations, rotations, reflections, and dilations.

Beth Menzie

Urban Env.

20 Resources

45 Favorites

20 Resources

45 Favorites

Rocking Rotations

Geometry

» Unit:

Transformers and Transformations

Big Idea:Students will use a hands-on approach to discovering how polygons are rotated in clockwise and counterclockwise rotations.

Stephanie Conklin

Suburban Env.

29 Resources

10 Favorites

29 Resources

10 Favorites

Becoming More Familiar with the Rules for Transformations

Geometry

» Unit:

Transformations

Big Idea:Name that transformation! Students will work at identifying transformations performed upon geometric figures.

Beth Menzie

Urban Env.

22 Resources

17 Favorites

22 Resources

17 Favorites

Reconsidering Rotations

Geometry

» Unit:

Congruence and Rigid Motions

Big Idea:Students learn how rotations work by constructing one--then use their insights to deduce the location of a missing Mars rover.

Tom Chandler

Rural Env.

31 Resources

4 Favorites

31 Resources

4 Favorites

Taking Apart Translations

Geometry

» Unit:

Congruence and Rigid Motions

Big Idea:Using geometric constructions and measurement to learn the properties of rigid motion via translation.

Tom Chandler

Rural Env.

32 Resources

32 Resources

Re-Examining Reflections

Geometry

» Unit:

Congruence and Rigid Motions

Big Idea:Students learn the properties of reflections by constructing one. They use these properties to solve problems involving the Gateway Arch in St. Louis.

Tom Chandler

Rural Env.

33 Resources

2 Favorites

33 Resources

2 Favorites

Introduction to Transformations and Reflections

Geometry

» Unit:

Transformers and Transformations

Big Idea:Transformers ... dum dum dum!! This lesson features video clips from the Transformer Movie series to engage students and help connect their prior knowledge of this vocabularly.

Stephanie Conklin

Suburban Env.

15 Resources

18 Favorites

15 Resources

18 Favorites

Fall Interim Assessment

Geometry

» Unit:

Fall Interim Assessment: Geometry Intro, Constructions and Rigid Motion

Big Idea:This is a comprehensive assessment of Units 1, 2 and 3.

Marisa Laks

Urban Env.

6 Resources

4 Favorites

6 Resources

4 Favorites

Rotational Symmetry

Geometry

» Unit:

Defining Transformations

Big Idea:Turnabout Play is Fair...and Fun. In this lesson, students explore rotational symmetry.

Anthony Carruthers

Suburban Env.

16 Resources

22 Favorites

16 Resources

22 Favorites

Transformations Unit Assessment

Geometry

» Unit:

Transformations

Big Idea:Test time! Students take the unit assessment, demonstrating their ability to apply their knowledge of transformations.

Beth Menzie

Urban Env.

21 Resources

4 Favorites

21 Resources

4 Favorites

Compositions, Not Just a Notebook

Geometry

» Unit:

Transformers and Transformations

Big Idea:Students will be introduced to compositions of functions by looking at MC Escher’s famous tessellations drawings. This lesson will then specifically explore glide reflections and give students an opportunity to review transformations including reflections

Stephanie Conklin

Suburban Env.

17 Resources

4 Favorites

17 Resources

4 Favorites

Transformations Review

Geometry

» Unit:

Transformations

Big Idea:Time for the unit review and pulling all of the concepts together!

Beth Menzie

Urban Env.

24 Resources

5 Favorites

24 Resources

5 Favorites

Rigid Motion and Congruence Unit Quiz

Geometry

» Unit:

Congruence and Rigid Motions

Big Idea:Students complete the summative assessment for the unit. Game Day!

Tom Chandler

Rural Env.

16 Resources

1 Favorite

16 Resources

1 Favorite

Interim Assessment Review Day 2 of 3: Transformational Geometry (Part 1 of 2)

Geometry

» Unit:

Fall Interim Assessment: Geometry Intro, Constructions and Rigid Motion

Big Idea:This review lesson covers content from the Transformational Geometry unit. Students identify transformations and transform figures on the coordinate plane.

Marisa Laks

Urban Env.

13 Resources

3 Favorites

13 Resources

3 Favorites

What are Transformations?

Geometry

» Unit:

Transformational Geometry

Big Idea:Students will explore the four basic transformations through the context of the book Alice's Adventures in Wonderland.

Marisa Laks

Urban Env.

20 Resources

10 Favorites

20 Resources

10 Favorites

HSG-CO.A.1

Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.

HSG-CO.A.2

Represent transformations in the plane using, e.g., transparencies and geometry software; describe transformations as functions that take points in the plane as inputs and give other points as outputs. Compare transformations that preserve distance and angle to those that do not (e.g., translation versus horizontal stretch).

HSG-CO.A.3

Given a rectangle, parallelogram, trapezoid, or regular polygon, describe the rotations and reflections that carry it onto itself.

HSG-CO.A.4

Develop definitions of rotations, reflections, and translations in terms of angles, circles, perpendicular lines, parallel lines, and line segments.

HSG-CO.A.5

Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using, e.g., graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto another.