3, Lesson 6, Unit 7, Grade 7, OpenUp icon
Instructional Activity

What Can You Build?

Lesson 6. Unit 7. Grade 7 Open Up Resources

Open Up Resources15 min(s)

This Instructional Activity is a part of the Lesson 6, Unit 7, Grade 7. The purpose of this activity is for students to explore a physical representation of polygons and make observations about triangles and quadrilaterals. This introductory activity serves to familiarize students with the tools and definitions they will use in future activities. Students may notice that some sets of 3 strips cannot make a triangle, but formalizing rules about what lengths can and cannot be used to form a triangle is not the goal of this lesson. This is the place to notice that pairs of triangles with 3 matching lengths make identical triangles, whereas pairs of quadrilaterals with 4 matching lengths do not necessarily make identical quadrilaterals. Students will express this observation more formally in the next activity.

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