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In your own backyard
hands-on model helps people understand the principles of mechanics through the self-assembly of motion models
All you need is a table
where it was developed more than 40 years ago to demonstrate Newton's Laws of Motion
GraviTrax Action Pack - Hammer Staff Pick In your own backyardHammer 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