English or Spanish language tracks; closed captioned.
Title from videodisc label.
For grades K-4.
Walking on a balance beam and riding a bike require both motion and balance, two concepts that are related. Kids learn that motion is movement caused by unbalanced forces, while gravity and friction are introduced as forces that affect motion. Includes simple explanations of key concepts such as momentum and equal and opposite reactions, as well as introduction to the idea of center of gravity.