GPS: From Folding to Dynamic Geometry Environments

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  • 1 Wayne State University in Detroit, Michigan
  • 2 Dana Hall School, Wellesley

In this month's Growing Problem Solvers, we focused on supporting students' understanding of congruence and similarity through rigid motions and transformations. Initial understandings of congruence and similarity begin in first grade as students work with shapes in different perspectives and orientations and reflect on similarities and differences.


Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners' growth as problem solvers across their years of school mathematics.

Task 1

Task 2

Mathematics Teacher: Learning and Teaching PK-12


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