Colour Swap - Gravitrax Add-On Size:Ages 8+A 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
they can participate in tactile play using tweezers to hold and move objects
INGENIOUS SELF-LUBRICATING PISTON
unique gift idea for just about anyone in your life—for birthdays
at home or while travelling
DIY model kits
South America
Each player has their own board in this unique take on snakes and ladders
retains them and then releases them all at the same time
interactive videos
and remember how much joy it was to ride your favorite horse on its happy round and round trip
Book 1: 160 pp softcover
which can be inspected both before and after the effect