standard_description: Multiply one-digit whole numbers by multiples of 10 in the range 10–90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations.
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