Hoberman Large Rainbow Sphere
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The Hoberman Large Rainbow Sphere is an expanding and contracting ball. It
cleverly combines mathematics and geometry to create a surprising motion that
fascinates children and adults alike.Pull outwards and it will grow from 23 cm
in diameter to a whopping 77 cm! Give it a slight push and it will contract
back to its original size.Why not give these tricks a try?Flip DownHold the
closed Sphere by one hub on top of your open palm. Flip the Sphere over and
watch it open, then flip it back to the top of your palm and let it close.
When youve mastered this, try it with your other hand.Open BounceHold the
Sphere fully open with two hands and throw it down to the floor. If you spin
it towards you, it will bounce back.Two-Handed Open-to-Close SpinHold the
opposite hubs of an open Sphere between your thumbs and first two fingers.
Using your thumbs, twirl the Sphere backwards as you close it and push in so
the hubs are spinning on the palms of your hands. This takes practice, but
looks really cool.Floor SpinOpen the Sphere and place it on the floor. Holding
the upper hub, spin the Sphere and watch it move. Try spinning it on a hub,
then a triangle, then a pentagon notice the different way it moves on each of
these shapes.
