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Drag the number coins onto their doubles. Use your brain, pencil and paper but no calculator.
Arrange the digits to make three 3 digit numbers such that the second is double the first and the third is three times the first.
Questions about scaling up the ingredients in the correct proportion for the witch's brew at Hallowe'en.
Begin with one, double it, double it again and so on. How many numbers in this sequence can you write down before the register has been called?
Pupils should be taught to understand and use double angle formulae; use of formulae for sin (A ± B), cos (A ± B), and tan (A ± B);
understand geometrical proofs of these formulae;
understand and use expressions for a cosθ + b sinθ in the equivalent forms of r cos (θ ± α) or r sin (θ ± α)
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