Explore and recognize that how fast or how slowly one gear makes another turn depends on the number of teeth on the gears and their position.
Explore and recognize that the effectiveness of a lever depends on the arrangement of the pivot point, effort and load.
Explore and recognize that the turning ratio of one pulley to another is determined by the size of the pulleys.
Identify a wheel and axle as a simple machine and where friction might be found.
Invent a digital accessory that fits your needs and ease your daily life.
The maximum quantity of an item that can purchased in each transaction is 99.
To inquire about purchasing more than 99 of one item, please call 800-362-4308.
To inquire about purchasing more than 99 of one item, please call 800-362-4738.