Food in the classroom: Science Experiments Using Lemons and egg


For many children around the world, learning about science can be boring and often complicated experience. However, it does not have to be this way. There are many ways for teachers and parents to make science fun and memorable using simple household items.

with common items like egg and lemon, for example, it is easy to demonstrate the simple scientific concepts such as how forces and electrical work.

Fun experiments with eggs

easy show to begin with young science students is how to squeeze an egg without breaking it. Make sure each student has their own raw egg and teach them to put it in their palms. Each hand should then close around the whole egg, apply pressure evenly all over it. Children who have never done this experiment before will probably expect it to break. So if someone is nervous or afraid to make a mess with its egg, give them a little bag to carry the experiment for reassurance. If the experiment is done correctly, the egg will not break. That’s because the curved surface of the egg means that the pressure is distributed evenly does not cause it to crack, explains why a hen can sit on an egg without breaking it. However, applying uneven pressure – such as cracking half egg along the side of the bowl – means that it breaks easily

Another great classroom experiment with eggs helps to explain the density of young students .. For this experiment, you will also need salt, water and glass that is wide enough for comfortable egg. Dissolve around three tablespoons of salt in 250 ml of water to make a very salty solution. Fill the glass halfway with this salt solution then carefully it up with plain water. Two types of water should not mix, so tip the glass at an angle and pour normal water along the side of the glass so it sits on top of the salt water. Then carefully put the egg in a glass. You will see that the egg will sink through still water, but when it meets salt water, it will stop moving so it floats in the middle of the glass. That’s because salt water has a much higher density than plain water, so it is a great way to teach children why people so easily float in the Dead Sea.

The learning potential lemons

Lemons are also a great way to teach children the basic scientific concepts. Start by making invisible ink with lemon juice. Squeeze the lemon into a bowl and add a few drops of water. Then dip a q-tip into juice and water mixture and use a wet end to write something small on paper – for example, getting a child to write their name. Write will be barely noticeable. When the paper is dry, keep it near something warm like a light bulb. As it heats up, letters will start to show up, make invisible ink lemon visible. This happens because the lemon juice is heated, it burns and turns brown. This experiment can also be done with orange juice or vinegar.

Another effective classroom experiment with lemons make fruit battery . This experiment is a bit technical so may be more suitable for older children and may need to be carried out in a laboratory. There are many different ways to do this experiment, you will always need a lemon, two different types of metal (such as copper coins and steel pin or zinc-coated nail), and some wire with alligator clips to hook up devices which will measure electric current. By installing both types of metal in lemon and connect it with alligator clips to multi meter, you can measure how many volts of electricity lemon battery emits.


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