Illustrating the Standards for Mathematical Practice

Congruence and Similarity

Reasoning and Explaining, 6-12

This module prompts participants to examine the meaning of defining congruence and similarity through transformations as articulated in the Common Core State Standards. To do this, participants are asked to compare and contrast static definitions of congruence and similarity with dynamic definitions of congruence and similarity. They are also prompted to consider implications for instruction that the dynamic definitions have on teaching and learning mathematics.


Module Resources

Congruence and Similarity - Presentation
Congruence and Similarity - Resources
Congruence and Similarity - Resources 2
Congruence and Similarity - Resources 3
Congruence and Similarity - Resources 4
Congruence and Similarity - Resources Lesson Graph


Module Video

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You may also download this video in a higher resolution format: Congruence and Similarity Through Transformations.mov (169 Mb)