Explores the concepts of buoyancy and density, and explains why things float or sink in water. Includes color photographs, experiments, text-related questions, and a glossary.
"An ecosystem is a community of living and non-living things connected to one another where they live. Young readers are introduced to some of the plants and animals in a forest ecosystem. Children are encouraged to learn more about food chains in a forest and to draw a food chain of their own"--Provided by publisher.
"An ecosystem is a community of living and non-living things connected to one another where they live. Desert ecosystems have very little water, but they are home to many plants and animals. Young children are introduced to one desert food chain and are encouraged to learn more and draw a food chain of their own"--Provided by publisher.
"How do big construction machines do their job? Young readers will see that they use the force of push and pull to get the work done"--Provided by publisher.
"Young students are introduced to the cycle of day and night and how the Sun heats our planet and provides life for all animals and plants"--Provided by publisher.
"This low-level book describes what light is and how objects can only be seen with light shining on them or from them. Simple explanations describe which materials light can shine through, what causes shadows, and what happens when you shine light on a mirror"--Provided by publisher.
"Seeing is one of our five senses and we need light to see the world around us. This book explains in simple terms how light shines on objects allowing our eyes to see and send messages to our brain"--Provided by publisher.
"Hearing is one of our five senses. Sound helps us identify things around us and helps us learn. Learn how sound travels in waves and we hear different pitches of sound"--Provided by publisher.
