Looking after our bodies
Biology · Early Years · The School
Parts with jobs
Your heart pumps blood. Your lungs take in air. Your brain thinks and controls everything. Your bones hold you up and protect the soft parts — your skull is a helmet for your brain. Point to each as you name it; knowing where they are makes the jobs stick.
Sleep, food, water, moving
Sleep is when your brain files what you learned that day, which is why tired people forget things. Food is fuel and building material. Water keeps everything working — you are mostly water. Moving keeps the heart strong. Four simple things, and every one of them changes how well you think tomorrow.
Germs and the twenty seconds
Germs are living things too small to see. They spread on hands, which is why hand-washing works: twenty seconds with soap, because soap breaks germs apart and time lets it. Sneeze into your elbow, not your hand — your elbow does not open door handles.
Rub a little glitter or flour on your hands and shake a friend's hand. Look at their palm: some has moved across. Now touch a door handle and let someone else touch it after you — some has moved again. This is exactly how germs travel, except you cannot see them. Now wash with soap for twenty seconds and look again. Rinsing with water alone leaves plenty behind; soap and scrubbing is what shifts it.