Kids from 9 to 12 Years Archive

Crystal Growing Experiment

Let me show you what we have put in our Christmas Tree. Do you feel like making yours? We will show you how to do it, because it is also an experiment, in this case, to investigate on crystals and crystallography. You need alum (potassium aluminum sulfate), water and some pipe cleaners. We bought alum here, but maybe you know any other shop where you can find it. You need …

Experiment of the Colored Eggs

Today we will talk about an extension of the experiment of the rubbery egg. In that experiment we soaked an egg in vinegar to make the shell disappear. The shell is removed by the reaction between acetic acid in vinegar and calcium carbonate in the eggshell. Today we will start from this rubbery egg to continue with our experimentation: You need to soak the rubbery egg in colored water (we …

Learning in Nature: Blackberries Jam Experiment

It’s summer and these days we have been doing something we love: pick blackberries. Have you ever imagined what a scientific experience it can be to hand pick blackberries and transform them into a delicious jam? You know I am convinced that almost any activity you can perform outside in nature, can provide a scientific knowledge. Just to start: we found the best places to find berries, we compared the …

8 Experiments on Health and Nutrition

Do you remember we were compiling experiments to study the living beings without text books? In this last article, we will continue working on the human body with experiments on health and nutrition. We will start identifying nutrition related to growth and living: 1. In “La main à la pâte”  foundation web page they suggest a first idea for the little ones: (“Je grandis”), so that they realize how they …

Experiment with Surface Tension Creating Beautiful Colored Figures

Our suggestion today is a surface tension experiment, that is really a variation of the experiment with milk, food coloring and soap. The variation consists on using white glue instead of milk. You need to cover with glue a small transparent container such as a yogurt lid. Then you put some liquid food coloring on the surface. You will see that the color drops remain attraped in the glue. Then …

Super Strong Egg experiment

We usually think of eggs as a fragile object, that can be easily broken , but this is not always the case. You would be surprised of how resistant the eggshell can be under certain circumstances. Try holding an egg between your thumb and forefinger, squeezing the top and the bottom of the egg. Could you break it? You’re unlikely to break it that way. Now wrap your fingers around …