Simple machines make work easier to do. But how? Join Joan at the Discovery Center of Idaho as she tries various experiments with simple machines. Science Trek is available to stream on pbs.org and ...

A simple machine is a tool that helps us do work. They use clever shapes to help us move, lift, cut and other types of work. Learn more about the inclined plane, the pulley, the lever, the wheel and ...

Fourth grade is the perfect time to turn science into an adventure. Hands-on experiments make abstract concepts real, spark curiosity, and build confidence in STEM. With simple materials and creative ...