The Spillnot™, 1 Each

The SpillNot™ by United Scientific is a physics demonstration tray that keeps liquid in its container while it is carried or swung. A flexible handle and a suspension point above the center of the tray keep the forces on the liquid directed toward the tray, so the sideways forces that normally cause spills are not transmitted. Teachers use it to prompt analysis of Newton's laws and circular motion. An activity guide is included.