Investigate: Rebuilding the River Rock Bridge

Students determine possible addends that equal a given sum.

By Amplify Classroom

Grades: 2nd Grade

Subject: Math

Learning goals: Today’s Goals • Determine possible addends that equal a given sum. • Language Goal: Explain strategies for finding addends that equal a given sum. (Speaking and Listening) Materials Lesson Resources: Activity PDF, Activity PDF (answers), Investigation Organizer PDF (optional); Manipulative Kit: base-ten blocks (optional); Classroom materials: Three-Digit Place Value Mats (optional, from Unit 5), coloring materials (as needed)