standard_description: Give an informal argument using Cavalieri’s principle for the formulas for the volume of a sphere and other solid figures.
problem_activity: Stage 3: Find Shapes
Required Preparation
Materials to Gather
Picture books
Materials to Copy
Blackline Masters
Picture Books Stage 3 Recording Sheet

Narrative
Students look through picture books and notice and describe shapes they see in the pictures.
Variation:
Students may record the shapes they see with drawings or words.
Additional Information
Each group of 2–4 needs at least one picture book that shows a variety of shapes throughout the book.


aligns: no