Developed by leading science educator and former president of the National Science Teacher's Association, Ed Ortleb, "Heat, Light, and Sound" offers curriculum-

The activities in this book reinforce basic concepts in the study of light and sound, including the nature and behavior of light, sources and uses of light, typ

This book presents a program of basic studies dealing with light and sound energy. The sources and nature of light and sound are presented along with various ch

The universe is full of energy from the amazing power of the sun to the food we eat. Energy makes things work. Did you know heat, light, and sound are different

Developed by leading science educator and former president of the National Science Teacher's Association, Ed Ortleb, "Plants and Animals" offers curriculum-orie