Can you make an elevator out of a spool of thread, some string and a hanger? Your friends might think it is magic, but it’s science at work! Here’s an easy experiement that has its ups and downs! 1.

From catapults to caterpillar tractors, machines throughout the ages have served man and lightened the workload. Fourth-graders at Hudsonville's Park Elementary School learned just how simple machines ...

A weight machine is an exercise machine used for weight training that uses gravity as the primary source of resistance, and a combination of simple machines to convey that resistance to the person ...