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Transforming lives through learning Scottish Survey of Literacy & Numeracy Support Material Second Level - Fractions Classroom version Produced by Education Scotland Transforming lives through learning

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16 X 3X 3

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Finding a fraction of an amount

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Strategies Strategy 1 Step 1:

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Strategies Step 2 Split the pizza into 5 equal parts: Now share 5400 equally between the 5 slices – 1080 on each slice.

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Strategies

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Strategies Remove one fifth to leave four fifths: Add 1080 + 1080 + 1080 + 1080 to find the answer. Is one of the two strategies easier? Might one strategy be better in one situation and the other for a different problem?

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Finding a fraction of an amount

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Strategy 400g Whole Amount 200g 100g 50g 2 Halves 4 Quarters 8 Eighths

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Strategies Splitting into convenient groups of 4 Counting and shading 1,2,3 and leaving the 4th un-shaded.

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Strategies Consider though not only shading 3 out of every 4 circles, but also consider shading 3 out of 4 rows

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Simplifying fractions Suppose we want to simplify the fraction Draw two identical rectangles. Split one into 8 equal parts and the other into 4 equal parts. Shade the same area in each: What fraction of the first rectangle is shaded? What fraction of the second rectangle is shaded?

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Comparing fractions

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Comparing fractions Would laying the two rectangles over one another help?

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