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Ratio & proportionFoundation

Simplifying ratios

Tiles grouped by the highest common factor show 12 : 18 is 2 groups to 3. Fades to dividing both sides, then larger numbers.

A free key stage 3 and GCSE Foundation ratio and proportion lesson on simplifying ratios, spec code R4. It has a lesson deck to teach from with a visualiser, a worksheet with answers, a puzzle, an exit ticket, end of unit tests and a method video.

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