Lesson Plan
Scale, Shapes, and Sets
Use this fun and easy lesson plan to teach your students to predict and calculate dimensions for shapes to scale in sets.
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Learning Objectives
Students will be able to calculate scale dimensions and predict next shapes to scale in a set.
Introduction
(5 minutes)- Draw two lines in front of your students, one twice as long as the other labeled 4 cm and 2 cm respectively.
- Have your students think, pair, and share the answer to this question, "What kind of relationship do these two lines have to one another?”
- Allow student responses and draw a connection to the fact that these two lines are in scale with one another: the longer line is two times the scale of the shorter one.
- Write the following, “The shorter line is [blank] times the scale of the longer one.” Have your students think, pair, and share the missing amount.
- Direct the whole class to share-out of answers and reasonings.
- Confirm the answer to be 1/2.
- Explain that scale is the amount a measurement is multiplied by to create proportional model. Shapes are proportional to one another if their internal angles are the same. This lesson will focus on proportional shapes.