If six girls can plant 90 trees in a day, how many trees can ten girls plant in a day?
If five men can dig a hole in one hour, how long will it take two men to dig half a hole?
Topics: Starter  Arithmetic  Problem Solving  Ratio
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If a hen and a half, lays an egg and a half, in a day and a half. How many eggs will 9 hens lay in 6 days? 
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Texas Instruments Nspire CalculatorThis handheld device and companion software are designed to generate opportunities for classroom exploration and to promote greater understanding of core concepts in the mathematics and science classroom. TINspire technology has been developed through sound classroom research which shows that "linked multiple representation are crucial in development of conceptual understanding and it is feasible only through use of a technology such as TINspire, which provides simultaneous, dynamically linked representations of graphs, equations, data, and verbal explanations, such that a change in one representation is immediately reflected in the others. For the young people in your life it is a great investment. Bought as a gift for a special occasion but useful for many years to come as the young person turns into an Alevel candidate then works their way through university. more... 
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