The Mysterious Rattleback is a tricky toy.
Spin it counter-clockwise and it continues to spin.
When you spin it clockwise, it will suddenly stop, rattle back and forth, and then spin slowly in the opposite direction.
You can also tap an end and it will spin around automatically. It's interesting to ponder how this act of physics really works, but it is also fun to simply enjoy the astonishing behavior of the Rattleback.
$16.90 SGD $19.90 SGD
10-Inch Glow in the Dark Dinosaur Skeleton Puzzles, Archaeology Kit For kids (T-Rex) Easy Skeleton Assembling with Step-by-Step Introduction Assembled Dino Figures Measure Approx. 10 Inches in Length Glow-in-the-Dark...
$15.90 SGD $29.90 SGD
s: Material: ABS+Electronic Component Size:21x18x7cm One T4 Transforming Solar Robot Educational DIY moving machine 4 x Transformations to Build and rebuild! Dinosaur - with moving legs and fierce jaws Robot...
$12.90 SGD $32.90 SGD
4D FameMaster - DIY - Dino Diorama - Hungry Raptor