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## The Cake: Instructor's Guide

### Main Ideas

• Integration involves multiplying (and chopping and adding).

Estimated Time: 15–30 minutes

Students work in groups to write down and evaluate single integrals for finding the volume of a cylinder.

### Prerequisite Knowledge

• The ability to interpret contour maps.

### Activity: Introduction

This activity naturally follows the Park activity.

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### Activity: Wrap-up

Emphasize that integration is about chopping, adding, and multiplying, and that experimental/numerical data can be used to obtain as good an approximation to an integral as desired.

### Extensions

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