Lesson objective: We can count to answer how many objects are arranged in a line.

This lesson helps to build grouping within a counting strip in order to count easily and efficiently. This work develops students' understanding of one to one correspondence and counting.

Students engage in Mathematical Practice 1 (Make sense of problems and persevere in solving them) as they represent, group, and count objects in this practice.

**Key vocabulary:**

- counting strip

**Special materials needed:**

- counters or shapes