Let’s Circulate!

The heart and blood vessels (veins and arteries) make up the circulatory system. The heart pumps blood that carries oxygen and nutrients to all parts of the body. The heart is the size of a fist and acts like a pump to circulate blood. Tell your carschoolers to put their hands over the center of […]

What’s The Largest Organ in the Human Body?


The answer may surprise you, it’s your skin! Skin forms a protective layer over the body to help prevent injury and disease, keeps moisture in the body, regulates the body temperature, produces vitamin D, and excretes waste. Looking at skin through a magnifying glass or jeweler’s loop is a terrific way to see the […]