standard_description: Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product.
problem_activity: Stage 1: Explore
Required Preparation
Materials to Gather
Picture books

Narrative
Students look at picture books and identify groups of objects. They may recognize small quantities or count to figure out how many.
Additional Information
Each group of 2 needs at least one picture book that shows groups with different numbers of objects throughout the book.


aligns: no