Missing Link - The Mind-Twisting Puzzle and Math Toys Scratch away the black coated

Scratch away the black coated pages to reveal patterns

As a little pig

Figures range in size from 1” to 3” and they are phthalate and lead free to ensure your child’s safety

12mm hex size Ball Bearings: Full set Pinion Gear: 15 tooth Spur Gear: 46 tooth composite Body: Trimmed and painted white with all sponsor decals applied Bumper: Front foam with plastic raised skidplate that allows car to slide over objects in the road Caster: Adjustable

It took 14 years to finish the enormous project

Missing Link - The Mind-Twisting Puzzle and Math Toys Scratch away the black coatedMissing link, a unique mechanical slide puzzle invented in 1981 with millions of combinations! mix it up and try to get all the colors to match. Can you find "the missing link" this missing link puzzle consists of a square tower with four layers. On the sides are sliding tiles, and each side has a chain in a different color, yellow, green, red and white. The white chain has only 3 tiles, allowing the tiles to slide up and down into the gap. The top