Lesson 13

Resolvamos problemas-historia de quitar

Lesson Purpose

The purpose of this lesson is for students to solve Take From problems, with unknowns in all positions, in a way that makes sense to them.

Lesson Narrative

In previous units, students solved Take From problems with the Result or Change unknown. In this lesson, students solve a new problem type, Take From, Start Unknown. This type of problem is often challenging for students as the language signifies subtraction, but you must add to solve the problem. Students consider how a drawing represents different Take From story problems. Students are not required to master this type of problem until grade 2.

  • Engagement
  • MLR8

Learning Goals

Teacher Facing

  • Solve Take From story problems, with unknowns in all positions, in a way that makes sense to them.

Student Facing

  • Resolvamos un nuevo tipo de problema-historia.

Required Materials

Required Preparation

Activity 2:

  • Create a poster of the unlabeled diagram shown three times: 

CCSS Standards


Building Towards

Lesson Timeline

Warm-up 10 min
Activity 1 20 min
Activity 2 15 min
Lesson Synthesis 10 min
Cool-down 5 min

Teacher Reflection Questions

In grade 2, students are introduced to tape diagrams as a tool for making sense of story problems. How does the work of this lesson lay the foundation for understanding tape diagrams? How will the tape diagrams used in grade 2 be different than the diagram students analyzed today?

Print Formatted Materials

Teachers with a valid work email address can click here to register or sign in for free access to Cool Down, Teacher Guide, and PowerPoint materials.

Student Task Statements pdf docx
Lesson Cover Page pdf docx
Cool Down Log In
Teacher Guide Log In
Teacher Presentation Materials pdf docx