6th Grade Math Lesson
Flip It and Multiply: Dividing by a Fraction
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6th Grade — Level I (Basic/Foundations) — Level I (Basic/Foundations)BTC Style / Thinking ClassroomsCCSS.MATH.6.NS.A.150 min
Learning Objective
Students will use multiplication by the reciprocal to divide a whole number or fraction by a fraction, and explain why the algorithm works using a visual model.
Lesson Overview
Students move from whole-number division review through the 'keep-change-flip' algorithm, building understanding with area models and number lines before applying the rule to mixed contexts.
Materials
- Whiteboard and dry-erase markers
- Pencil and paper
Scaffolded Task Progression
1Task 1
Look at the number line below. How many s fit inside ? Write this as a division sentence.
[ Interactive graph / diagram, available in the full lesson ]
[ Interactive graph / diagram, available in the full lesson ]
2Task 2
How many $\frac{1}{4}$s fit inside $2$? Use the area model below to count, then write the division sentence.
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[ Diagram — available in the full lesson ]
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