## Reflection: Problem-based Approaches Volume Formulas, Cavalieri's Principle, and 2-D Cross-Sections - Section 3: You Choose: Practice Thinking About Volume or Take it Further

In teaching the lesson to the next class, I was able to clarify the sphere volume task without lowering cognitive demand.  During lunch, I took pictures of the cross-sections of the cylinder-without-the-cone, which helped my next class of students make sense of the variables and how they related to each other.  I wanted to share these pictures because they were really powerful!

Problem-based Approaches: A Better Way to See the Cylinder-Without-a-Cone Cross-Sections

# Volume Formulas, Cavalieri's Principle, and 2-D Cross-Sections

Unit 10: Geometric Measurement and Dimension
Lesson 11 of 14

## Big Idea: In a differentiated lesson based on student choice, students will be able to practice finding the volume of prisms or apply Cavalieri's Principle to determine the volume formula for a sphere.

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4 teachers like this lesson
Standards:
Subject(s):
Math, Geometry, Measurement, modeling, space, shapes, Cavalieri's Principle, Differentiated Instruction
80 minutes

### Jessica Uy

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