## Reflection: Connection to Prior Knowledge Parallel and Perpendicular Cross Sections - Section 2: Explore

The idea of cutting and making posters made for high energy in class. There were a lot of questions about what counted as a cross section. We had an opportunity to talk about parallel and perpendicular and I saw students justifying their cuts. I think my students were excited about the presentations and explaining to their classmates.

Poster Maker Energy
Connection to Prior Knowledge: Poster Maker Energy

# Parallel and Perpendicular Cross Sections

Unit 3: Geometric Measurement
Lesson 2 of 5

## Big Idea: This lesson is awesome because it allows students to apply what they have learned and create some 3D figures and cut them apart to see the cross section. Students will also have an opportunity to review vocabulary in this lesson.

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35 minutes

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