Lesson objective: Apply multiplication and division to generating equivalent fractions.

This lesson provides an opportunity for students to apply their knowledge and understanding of generating equivalent fractions to a mathematical situation. Students are asked to create an equivalent alien juice recipe with given instructions.

Key Concept students will use:

- a/b = (nxa)/(nxb) because we have n times as many pieces in the whole. Each piece is n times smaller, so we need n times as many of them to cover the same distance or the same area.

Skills students will use:

- generating equivalent fractions (Grade 3, Unit 10)
- combining and partitioning models to generate equivalent fractions
- multiplication and division facts to find missing factor or divisor (Grade 3, Unit 7)

Students engage in Mathematical Practice 5 (use apprpriate tools strategically) as they decide how models, number lines, and fraction sense will help them find equivalence with multiplication or division.

**Key vocabulary: **

- denominator
- divide
- equivalent
- multiply
- numerator