HSG-CO.B.6

Use geometric descriptions of rigid motions to transform figures and to predict the effect of a given rigid motion on a given figure; given two figures, use the definition of congruence in terms of rigid motions to decide if they are congruent.

 
25 Lesson(s)
   

Transformations + Similarity

Geometry » Unit: Sweet Similar Shapes
Geometry » Unit: Sweet Similar Shapes
Stephanie Conklin
Saratoga Springs, NY
Environment: Suburban
 
Big Idea:

Students will use a pair-share activity and activate their prior knowledge to discover how transformations connect to AA criterion.

 
Favorites (6)
 
Resources (16)
 
Reflections (1)
quilt transformations and similarity
   

From Perpendiculars to Parallels

Geometry » Unit: Congruence and Rigid Motions
Geometry » Unit: Congruence and Rigid Motions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students consolidate and extend their knowledge of constructions related to bisectors: "A perpendicular to a perpendicular is a parallel."

 
Favorites (3)
 
Resources (29)
 
Reflections (2)
fromperpendicularstoparallels image
   

Bisector Bonanza

Geometry » Unit: Congruence and Rigid Motions
Geometry » Unit: Congruence and Rigid Motions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students use compass and straight-edge, aided by tracing paper and paper-folding, to explore the properties of bisectors, while gaining insights into the workings of transformations.

 
Favorites (3)
 
Resources (26)
 
Reflections (2)
bisectorbonza image
   

Reviewing Congruence

Geometry » Unit: Congruence and Rigid Motions
Geometry » Unit: Congruence and Rigid Motions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students review homework and assess their progress. How much have we learned?

 
Favorites (1)
 
Resources (27)
 
Reflections (1)
reviewingcongruence image
   

Discovering Similar Triangles

Geometry » Unit: Sweet Similar Shapes
Geometry » Unit: Sweet Similar Shapes
Stephanie Conklin
Saratoga Springs, NY
Environment: Suburban
 
Big Idea:

Completing a hands-on activity, students will cut, categorize and discover properties of similar triangles.

 
Favorites (18)
 
Resources (29)
 
Reflections (5)
isos triangles with colors
   

Fall Interim Assessment

Geometry » Unit: Fall Interim Assessment: Geometry Intro, Constructions and Rigid Motion
Geometry » Unit: Fall Interim Assessment: Geometry Intro, Constructions and Rigid Motion
Marisa Laks
New York, NY
Environment: Urban
 
Big Idea:

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

 
Favorites (3)
 
Resources (6)
 
Reflections (1)
interim assessment image
   

Rigid Motions and Congruence

Geometry » Unit: Rigid Motions
Geometry » Unit: Rigid Motions
Marisa Laks
New York, NY
Environment: Urban
 
Big Idea:

Students will build on prior knowledge to develop a definition of congruence in terms of rigid motion.

 
Favorites (9)
 
Resources (20)
 
Reflections (1)
rigid motions and congruence image
   

Rigid Motion, Congruent Triangles, and Proof

Geometry » Unit: Polygons and Congruent Triangle Proofs
Geometry » Unit: Polygons and Congruent Triangle Proofs
Beth Menzie
Amsterdam, NY
Environment: Urban
 
Big Idea:

Using the method of flow chart proofs, students begin to develop the skills necessary to understand and create congruent triangle proofs.

 
Favorites (2)
 
Resources (14)
 
Reflections (1)
image flow chart
   

Rotations in the Coordinate Plane

8th Grade Math » Unit: Transformations
8th Grade Math » Unit: Transformations
Christa  Lemily
Bowling Green, KY
Environment: Suburban
 
Big Idea:

Transition students from using tracing paper to perform rotations into using coordinates and realizing the pattern of rotating in multiples of 90 degrees about the origin.

 
Favorites (7)
 
Resources (11)
 
Reflections (1)
rotation on graph image
   

Congruent Triangles Based on Rigid Motions

Geometry » Unit: Rigid Motions
Geometry » Unit: Rigid Motions
Marisa Laks
New York, NY
Environment: Urban
 
Big Idea:

Students will examine triangles on the coordinate plane and use rigid motions to show two triangles are congruent.

 
Favorites (9)
 
Resources (20)
 
Reflections (2)
triangle congruence based on rigid motion image
   

Dilation Nation

Geometry » Unit: Transformers and Transformations
Geometry » Unit: Transformers and Transformations
Stephanie Conklin
Saratoga Springs, NY
Environment: Suburban
 
Big Idea:

Students will review transformations using a brain pop and learn how to geometrically enlarge and shrink shapes.

 
Favorites (3)
 
Resources (15)
tigers dilating
   

Four Triangles

Geometry » Unit: Creating Classroom Culture to Develop the Math Practices
Geometry » Unit: Creating Classroom Culture to Develop the Math Practices
Jessica Uy
Sunnyvale, CA
Environment: Suburban
 
Big Idea:

Students will engage in a hands-on activity through which they will be introduced to the notion of proof by exhaustion as well as one of the big ideas of geometry: classifying and differentiating.

 
Favorites (8)
 
Resources (19)
 
Reflections (1)
four triangles li 2
   

Four Triangles Sorting Activity

Geometry » Unit: Creating Classroom Culture to Develop the Math Practices
Geometry » Unit: Creating Classroom Culture to Develop the Math Practices
Jessica Uy
Sunnyvale, CA
Environment: Suburban
 
Big Idea:

Students will take risks and build a sense of community as they share working definitions of their criterion and show how their four-triangle figures exemplify that criterion with their peers.

 
Favorites (2)
 
Resources (18)
 
Reflections (2)
four triangles sort li resized
   

Rigid Motion and Congruence Unit Quiz

Geometry » Unit: Congruence and Rigid Motions
Geometry » Unit: Congruence and Rigid Motions
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students complete the summative assessment for the unit. Game Day!

 
Favorites (1)
 
Resources (16)
unit quiz image
   

Triangle Construction Site

Geometry » Unit: Triangles and Congruence
Geometry » Unit: Triangles and Congruence
Tom Chandler
Ault, CO
Environment: Rural
 
Big Idea:

Students use an online simulation to build triangles from sets of parts and discover minimum conditions for proving triangles congruent.

 
Favorites (4)
 
Resources (15)
triangleconstructionsite
Common Core Math
 
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