Lesson objective: Apply knowledge of compare problems (more version) to write and solve your own comparison problem.

This lesson provides an opportunity for students to apply their knowledge and understanding of using strategies and tools to solve problems in a mathematical situation. Students are asked to write their own comparison problem, then trade with a partner and solve their partner's problem.

Key Concept students will use:

- Objects and drawings can be used to represent and solve problem types (add to, take from, put together, take apart, and comparing with unknowns in all positions) involving addition and subtraction.

Skills students will use:

- Apply properties of operations as strategies to add and subtract; (Grade 1, Unit 6)

Students engage in Mathematical Practice 1 (make sense of problems and persevere in solving them) as they create their own comparison problems and utilize strategies and tools to solve their partner's problem.

**Key vocabulary: **

- compare
- strategy
- tool

**Special Materials Needed:**

- counters
- cubes
- student number lines (optional)