Investigate: Squashes at the Playground

Students add within `100` to reason about how adding ones or tens will affect the sum. Note: The Activity was updated in the Teacher Edition PDF and in the Teacher Presentation Screens on 1/12/2026.

By Amplify Classroom

1st Grade

Math

Today’s Goal  • Find the sum of a two-digit multiple of `10` and a one-digit number within `100`. Materials Lesson Resources: Activity PDF, Investigation Organizer PDF (optional); Manipulative Kit: connecting cubes