These challenges offer our children the opportunity to develop their own problem solving strategies. The power of trial and improvement will undoubtedly be used to arrive at solutions.
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Age 5 to 11
Challenge Level
Arrange three red, three blue and three yellow counters into a three-by-three square grid, so that there is only one of each color in every row and every column.
Possible extension
This problem can be extended by adding a fourth color and using a 4 by 4 grid.
An additional challenge is to ensure that the main diagonals are also free of repetitions.
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HEADS AND FEET
