"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 surround them."--
"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 photos."--
"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."--