9. Use multiplication and division to generate equivalent fractions (A)
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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