Lesson 12

The purpose of this lesson is for students to ask mathematical questions and write story problems based on a given expression.

In previous lessons, students solved story problems of all types, matched them with tape diagrams and equations, and wrote stories to match tape diagrams. In this lesson, students write story problems to match equations, ask mathematical questions based on pictures and about their environment, and write story problems based on their observations. The goal of the lesson synthesis is for students to discuss which story they liked the most of those that were shared.

• Gather a see-through container with a collection of connecting cubes (or other math tool or object that might generate different math questions) to display in the launch.
• (Optional) Provide a copy of the blackline master for each group of 2 students.

Which students had opportunities to share their math story problems and thinking during the whole-class discussion? How did you select these students?