The Heart: Our Circulatory System
Written and Illustrated by: Seymour Simon
Genre: Nonfiction
Grades: 3-6
Awards: None
This book opens up with a fact that in an average lifetime, a heart will beat over 2,000,000,000 (two thousand million) times. In our body, the heart, blood, and web of blood vessels make up our circulatory system. Our hearts only weigh about ten ounces. Blood in our system is made up of red cells, white cells, and platelets that float inside plasmas. These blood plasmas help regulate our body's temperature. Throughout our day, the muscles of our heart contact almost one hundred thousand times a day and this contraction is powerful enough to send a jet of water six feet high into the air. The book then talks about that as people get older, deposits of a substance called cholesterol, may begin to appear inside of our arteries. These deposits leave less room for blood to flow through our arteries and then parts of our body may not get enough oxygen. We find that us humans are very unique with the river of blood flowing through our bodies everyday.
This is a fun and informative book about the heart the circulatory system. This book is best for third to sixth graders. A way to incorporate this book is by having students draw out our bodies and describe where the blood flows, and draw a diagram of the heart and what parts are inside the blood.
No comments:
Post a Comment