Showing Strategies

Students solve subtraction story problems and represent strategies for solving on a number line. Note: Activities 1 and 2 were updated in the Teacher Edition PDF and in the Teacher Presentation Screens on 1/12/2026.

By Amplify Classroom

Grades: 2nd Grade

Subject: Math

Learning goals: Today’s Goals • Solve one-step Compare and Take Apart story problems within `100` and represent thinking. • Language Goal: Explain how strategies are represented on number lines. (Reading, Speaking, and Listening) • Language Goal: Compare different representations of the same strategy. (Reading, Speaking, and Listening) Materials Lesson Resources: Number Lines (0–100) PDF or Split Number Line (0–100) PDF (from prior lessons); Classroom materials: dry-erase markers (optional), Questions to Ask Yourself chart (from Unit 2), markers or colored pencils (as needed)