The Rattleback is a long and thin half elliptical shape formed in plastic so that it has a slightly offset center of gravity. This offset gravity causes the Rattleback to spin in directional rotation of choice, usually counterclockwise. If you attempt to spin the Rattleback in the clockwise direction, strong preference will cause the Rattleback to rattle" back and forth after few rotations, stopping and then reversing the rotation back to the preferred clockwise direction. The directional preference is so strong that if the Rattleback is at a stand still and you push down on one end it will begin turning. Color may vary. Comes with a Teacher's Guide and reproducible Student Handout. "
Every order received by Westlab before 12pm PST will be dispatched on the next business day.
Shipping Time Based on Delivery Location
British Columbia/local shipments deliver in 1-2 business days
Alberta shipments deliver in 2-3 business days
Prairies (SK & MB) shipments deliver in 3-4 business days
Ontario/Quebec shipments deliver in 4-5 business days
Maritimes (NL, PEI, NS & NB) shipments deliver in 5-7 business days
Territories (YT, NT & NU) shipments depend on shipping service & location
*Ask our team for more information about shipping up north
Every order received by Westlab before 12pm PST will be dispatched on the next business day.
Shipping Time Based on Delivery Location
British Columbia/local shipments deliver in 1-2 business days
Alberta shipments deliver in 2-3 business days
Prairies (SK & MB) shipments deliver in 3-4 business days
Ontario/Quebec shipments deliver in 4-5 business days
Maritimes (NL, PEI, NS & NB) shipments deliver in 5-7 business days
Territories (YT, NT & NU) shipments depend on shipping service & location
*Ask our team for more information about shipping up north