🔬 Science · The Human Body
Heart & Blood Circulation
Describe the circulatory system in detail: the heart has four chambers (two atria, two ventricles) that pump blood in a double loop — one to the lungs for oxygen and one to the rest of the body to deliver it — through arteries, veins, and tiny capillaries
Typical age: 9–11 years
“Can your child trace the path blood takes through the heart and body — explaining that it goes to the lungs first for oxygen, then out to the rest of the body?”
0 / 3 mastered