Lesson objective: Solve compare problems.

This lesson helps to build fluency with solving compare problems (more version). Counters and number lines are used here because they support student understanding of comparing two groups. This work develops students' understanding that objects and drawings can be used to solve situational problems.

Students engage in Mathematical Practice 2 (reason abstractly and quantitatively) as they solve compare problems.

**Key vocabulary:**

- compare
- number line
- make a ten
- strategy
- tool

**Special Materials Needed:**

- counters
- cubes
- student number lines (optional)