Investigates facts about solids, liquids, and gases and provides information about natural and synthetic materials, properties of solids, liquids, and gases, reversible and irreversible changes, and mixing and separating mixtures.
Investigates how electricity works and how it is used and includes information on conductors and insulators, cells and batteries, electrical circuits, solar and wind power, and electricity in storms.
Examines the habitats of a number of species of plants and animals and includes information on how they survive and adapt to their surroundings, food chains and webs, endangered animals, and conservation.