"Ava teaches her younger brother Noah that the brain is like a computer, controlling the body through the spinal cord and the nerves"--Provided by publisher.
Explores the properties of one's pulse and discusses how the heart circulates blood throughout the body. Examines why one's pulse increases when one is active and includes full-color photographs, a glossary, and further reading sources.
Helps children understand why they might need glasses, explaining how the eyes work, what common vision problems are, and how they can keep their eyes healthy.