Crossing the RiverThe children row the boat across the river. One of them gets off the boat, and the other rows back. Then the child who is left on the boat gets off, and the mother rows across.The boat is now on the opposite side of the river to where they started. So the child who is on this side then rows the boat back to pick up the other one, and then both children cross together. 
Number Puzzle 1

Number Puzzle 2Helen is 9, Colin is 18, Amy is 8 and Jack is 4. 
Matchstick Puzzle 1Don't forget the 2 × 2 square, which makes the number up to six. 
Matchstick Puzzle 2There are several ways to do this! Here are just a few: Solution 1Solution 2Solution 3This solution shows two 1 × 1 squares, two 2 × 2 squares and one 3 × 3 square. 
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