We were taught a lot at school, but we were given too much information only in theory, so we simply forgot many things. If they were presented to us in plastic, it would be much more effective. We've rounded up 20 amazing things you didn't learn in school that will fill your knowledge gaps.
We are people visual beings and things are easier to remember on a plastic example than in theory. Unfortunately, there is not enough of this in the school. With the series below you will fill knowledge gaps and learn background about the things you encounter every day.
READ MORE: Surprising facts that will completely change your view of the world
![They didn't teach you these things in school.](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/date-night-movies-17092287-2371-1356-660x377.jpg)
you know how the face is formed in the womb? How does the lock work? What happens when we swallow? How do dogs drink? How does water refract light, or how big is Earth compared to the biggest star? Find out all this below.
20 amazing things you didn't learn in school:
How a camouflage motif is created on a military helmet:
![Military helmet](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/daec111d91f9c68765dd23e40e4bd712.gif)
How the trumpet works:
![Trumpet](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/69d8896d1819bc6d3bfa3a00e5e3d1cd.gif)
How a cheetah uses its tail:
![Cheetah](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/6f5d552f64390844f711851d620bd716.gif)
How to take off a ladybug:
![ladybug](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/59369b71f1a1e8463ad506dc5664afae.gif)
Hands after half a minute of washing:
![Dirty hands](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/702305-650-1445864364ruksitebright.jpg)
How the lock works:
![A lock](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/cd3fba8feb40feff73ebf153b9e28c10.gif)
Face after applying sunscreen:
![Sun screen](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/0933823a067c858e20fb87ee0447e726.gif)
How dogs drink:
![Dog tongue](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/be37119f4a427910f49b16b0dc7b334c.gif)
Earth's size compared to the largest star:
![Space](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/f29cb47a583aa6fd0c84c535cd1ae4be.gif)
How teeth are affected by braces:
![Braces](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/90d426dfe4c625e21d494505265c2b61.gif)
How to create an invisible screen:
![Invisible screen](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/85279b274c8975beb6d1869f636be72c.gif)
Contents of an egg under water:
![Eggs under water](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/3112e7cb68be902e8b9ad0e94a48adec.gif)
This is how light is refracted in water:
![Refraction of light in water](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/0530ebe89e74463c70ef7146519fafba.gif)
This is what happens when we swallow:
![Drinking](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/a355d1b5f5018b686c4a3cd637061ec0.gif)
Air traffic within 24 hours:
![Number of flights](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/6b5b586d4cfd6208673ff806baa0d999.gif)
The formation of the human face in the womb:
![Human face](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/5c38a40d99f130387ba23948389e15bd.gif)
Dandelion flowering:
![Dandelion](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/06ea6fde6f103ebaf832ee2403aee93c.gif)
The Pythagorean Theorem in practice:
![Pythagoras theorem](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/9f2125d97cc83576a79c47610fccbaa7.gif)
This is what happens to a star when it is sucked into a black hole:
![black hole](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/9f2df7fe3845cffaba5185a9ed2313ce.gif)
Growing Peas:
![Peas](https://e7852c3a.rocketcdn.me/wp-content/uploads/2016/12/1f2db9d47c01091b6977ff8fdbf965e7.gif)