Lesson objective: Divide unit fractions by whole numbers using number lines and tape diagrams.

This lesson helps to build procedural skill with division including a unit fraction as the dividend and a whole number as the divisor. Number lines and tape diagrams are used here because they highlight the division of a unit fraction into equal parts while maintaining equal parts in the whole. This work develops students' understanding that the meaning of division does not change when the dividend is a unit fraction.

Students engage in Mathematical Practice 5 (use appropriate tools strategically) as they represent the original fraction, the number of parts the quantity is divided into, and the number of those parts it would take to make a whole.

**Key vocabulary:**

- dividend
- divisor
- quotient