Sound is made up of tiny vibrations. Learn how different vibrations create different sounds! With age-appropriate critical thinking questions and carefully leve

This interactive book helps build reading skills with sight and sound! Read stories, hear word beginnings and endings, and play fun word-making games. Play 30 b

Introduces electromagnetic and mechanical waves, discussing the properties of waves, the electromagnetic spectrum, and vibrations.

Learn about sound and how it reaches your ears.

What kinds of solids can you see right now? Solids are a type of matter that is all around us. They can be heavy or weigh almost nothing. With age-appropriate c