"The air around us is made up of gases. We breathe in some gases. Some gases help balloons float! With age-appropriate critical thinking questions, young readers will learn all about the gases that su
"Water is wet and it can take the shape of whatever container it's put into! Water can do this because it's a liquid. Learn all about liquids with age-appropriate critical thinking questions and fresh
"Did you know rocks and lava are made of the same elements? Rocks are solid and lava is a liquid! Explore the properties of solids through colorful photos and carefully leveled text."--
