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Book 1: 160 pp softcover
interactive videos
unique gift idea for just about anyone in your life—for birthdays
they can participate in tactile play using tweezers to hold and move objects
Colour Swap - Gravitrax Add-On Size:Ages 8+ Book 1: 160 pp softcoverA clever tunnel shaped action block that gives the illusion of changing the color of a marble. By a clever sleight of hand, the ball goes inside the block and comes out in another color. An easy to master magic trick that is sure to have a spectacular effect in a GraviTrax marble run! Infinitely Modular And Compatible with all GraviTrax products. This action block is played with at least one Starter Set (essential to get started) and then combines