5, Lesson 13, Unit 1, Grade 8, OpenUp icon
Instructional Activity

Astonished Faces

Lesson 13. Unit 1. Grade 8 Open Up Resources

Open Up Resources10 min(s)

This Instructional Activity is a part of the Lesson 13, Unit 1, Grade 8. In this activity, students examine two figures made out of disjoint pieces: the outline of a face, two eyes, and a mouth. The disjoint pieces are congruent to one another taken in isolation. But they are not congruent taken as a collective whole because the relative positions of the eyes, mouth, and face outline are different in the two images. This activity reinforces a goal of the previous activity.

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