
Description
Pupils discover sine, cosine and tangent ratios by measuring sides and angles in triangles.
Files 
Trigonometry discovery (Investigation)16/4/2015
Pythagoras discovery (Investigation)31/3/2015
Discovering Pi (Investigation)11/3/2015
Square Differences (Investigation)8/3/2015
Happy Numbers (Investigation)8/3/2015
Growing Squares (Investigation)8/3/2015

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September 2015
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