Primary 4 continue to explore the human body and have been learning about the heart. We discovered that the heart is responsible for pumping blood around the body to every cell. Blood travels from the heart to the lungs, where it is oxygenated, then travels back to the heart to be pumped around the body. Blood vessels that carry blood away from the heart are called arteries and mainly carry oxygenated blood. Those returning to the heart are called veins and mainly carry carbon dioxide back to the lungs.

Here are our heart models that we made using play dough.

These 3 bottles which each hold 2l represent the average amount of blood in an adult human.