Simple Machine: Wood Screw Model

Price: $32.99
In stock
Kids are fascinated with the way things work. This wooden model that has been handcrafted from durable hardwood with smooth-moving parts allows children to explore the concepts of force, speed, motion, direction, and energy.

The screw, another of the simple machines, coverts a circular motion (the turning of the scrw) into a linear motion. It also lets you amplify the force a great deal, since turning the screw only moves the end of the screw a small amount.