This book explains what an ecosystem is and how the plants and animals within an ecosystem rely on and affect the ecosystem's existence. Different types of ecosystems are described, as well as the food webs within them. Through its presentation of how some changes to an ecosystem can be good while others are harmful, students discover the important role they can play in keeping ecosystems alive and well.

Force and motion are introduced in this book, which features vivid photographs that make the content easy to understand. Examples that students can relate to in their everyday lives are provided throughout the text. A "Show What You Know" section in the back of the book presents three questions to reinforce content understanding.

Matter is anything that has mass. This title provides background knowledge regarding how temperature affects the different states of matter and why. Also covered is the International System of Units and measuring mass and volume.

The many and various tools used by scientists are addressed in this title. It describes how beakers, scales, microscopes, scientific calculators, and other items are used to investigate and create new technology.