Lesson objective: Skip count groups of dollars and coins.

This lesson helps to build fluency with finding a total amount of money by skip counting dollars and coins by their values. Number lines are used here because students can track the value of the dollars and coins with the jumps they make as they are skip counting. This work develops students' understanding that the values of each dollar and coin can be used when skip counting to find a total amount of money.

Students engage in Mathematical Practice 4 (Model with mathematics) as they use number lines to skip count dollars and coins to find a total amount of money. Open number lines allow students to skip count by different values (e.g., three jumps of 10 to count three dimes and two jumps of 5 to count two nickels).

**Key vocabulary:**

- amount
- coin
- dollar
- number line
- skip count
- value

**Special materials needed:**

- coins
- hundreds chart
- number lines (filled in and blank)