Hello friends of @steemiteducation, based on the criterion that "education begins at home", today I want to show you a simple and above all fun way to teach our children.

Do you know the "wow factor"? It is that added value that has the things that amaze our little ones and manage to capture their attention, make them eat something they do not like, etc. In this lies the success of home experiments for children; Through surprise and wonder, experiments for children make it possible for children to learn something that might otherwise have been tedious ...

Today I want to show you how we can teach children about the density of liquids by doing homemade experiments with water and oil. We will also use some other ingredients that they will surely have in their homes. Do we see them?

The theory: what is density?

Before beginning the experiments, let's talk about the concept we have to learn. To explain to the children what density is, we can use two equal containers with marbles inside, one with many, and another with a few; everything that surrounds us (also us), is made up of very small things that are called molecules. Some of the liquids that we will use have many molecules, and a few others, such as our marbles containers. If we lift the containers we will see that the one with the most marbles is the heaviest, right? In the same way, liquids with more molecules, that is, with higher density, are heavier, and that is why in our experiments they will go to the bottom of the bottle, without mixing with the others.

Now that we know the theory, let's see the experiments.

Home experiments for children:

Water and oil do not mix

We start with the simplest experiment, but no less surprising for the little ones. It is enough to see this beautiful video that I made with my older daughter Sophia, to realize that the little ones have a wonderful capacity for wonder that is the engine of their curiosity.

Materials:

• A glass
• Water
• A mixer

A rain of color

This simple experiment will leave the little ones open-mouthed, it produces a beautiful effect that seems as if it were raining inside a glass of water and the rain is colored, they will love it !!

Materials:

• A glass
• Water
• Vegetable oil
• Liquid food coloring
• Salt.

Procedures:

We put some water in the glass, then a little oil and some drops of dye. Sprinkle with a little salt and the "magic" will occur: the drops of dye will cross the oil and will fall slowly in the water, forming beautiful drawings.

What's going on?

At first, oil floats in water because it is less dense. When we pour the salt, it goes to the bottom because it is heavier, dragging drops of oil with dye. When the salt dissolves, it "releases" the oil, which rises again.

The sea in a bottle

Another fun way to use water, oil and dyes is to create the illusion of having the sea inside a bottle. It is what we have done in this simple experiment.

Materials:

• Water
• Blue dye (can be ink, liquid watercolors, food coloring)
• Vegetable oil
• A bottle

Procedures:

As we have seen in the video, it is a very simple experiment. We must fill approximately one third of the bottle with water, take a few drops of dye and stir to mix. Then we complete the bottle with the oil, put the cap and move the bottle to see the "sea" move, make waves, bubbles and other precious effects.

Why it happens?

Water and oil do not mix, because water molecules are polar (they have a small positive charge at one end and another negative at the other end, so they stick together) and the oil molecules have no charge . For this reason, water molecules attract each other, and oil molecules do the same. In addition, the oil floats on the surface of the water because it has a lower density.

Children love to do experiments. With them, while having fun, they learn and ask questions about the world around them. Among its many benefits, scientific exploration feeds the child's natural curiosity, fosters his interest in science, stimulates reasoning and logic, improves his ability to solve problems, increases his self-esteem and prepares them to understand more complicated scientific concepts. in the future.

To enjoy science is not necessary to have a laboratory, you will be surprised at the amount of experiments that can be done with a few homemade materials. So do not wait any longer, get down to work and have fun with your children or students.

I hope that this article has been of your interest and help and I hope you in my next post.
Regards!!!