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All you need is a table
20 Practical investigations
The Check the Clues series uses Polya's four step problem solving approach: understand the problem
In your own backyard
GraviTrax Action Pack - Hammer Staff Pick All you need is aHammer it home! Propel the marble through your run by adding the Hammer. When triggered, the hammer swings down and hits the marble, giving it momentum to send it on its way. This accessory also includes 6 additional tracks. GraviTrax Starter Set required Contents: 1x Set of Instructions, 1x Hammer Tile, 1x Long Track, 2x Medium Tracks, 3x Short Tracks Total Pieces: 7 Ages 8 99 GraviTrax
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