Instructional Activity# Scaling F

Lesson 1. Unit 1. Grade 7 Open Up Resources

Open Up Resources10 min(s)

This Instructional Activity is a part of the Lesson 1, Unit 1, Grade 7. This task enables students to describe more precisely the characteristics of scaled copies and to refine the meaning of the term. Students observe copies of a line drawing on a grid and notice how the lengths of line segments and the angles formed by them compare to those in the original drawing. Identifying distinguishing features of the scaled copies means finding similarities and differences in the shapes. In addition, the fact that corresponding parts increase by the same scale factor is a vital structural property of scaled copies.