How do you get kids interested in science? Make it fun and hands on. These science experiments are guaranteed to get your kids excited and you don’t need any science knowledge to do them. Just a bit of common sense and a few household ingredients.
You will need: 1 cup of cornflour (it can be any size), 1 cup of water (it has to be the same cup as the one you use to measure the cornflour), 1 large bowl, a spoon, and food colour (optional)
Add cornflour into the bowl. Add the water and food colour. Mix and play around with the mixture.
Scrunch up the cornflour into your hands and see if you pick it all up and roll it into a ball. It will become a ball and look like a solid as long as you keep moving the ball between your hands.
Now keep your hands still with the cornflour ball still in your hands. What happens?
Dip your finger into the cornflour mixture, it should be a liquid. You can stir it gently and it look and feel wet.
Stir it really fast. What happens?
Punch the cornflour mixture with your fist. Did it splash?
You can do this on a large-scale, watch this video with the same mixture in a swimming pool.
You will need: 1 packet of Skittles, a large flat white plate, some water
Place the skittles in a large circle around the edge of the plate. Add water into the middle of the circle but don’t drown the skittles. Do this carefully so that the skittles do not move. Then keep still and watch what happens.
Repeat the experiment with hot water. Do you see a difference?
Repeat using M and M sweets.
Repeat but make a square shape with the skittles.
You will need: 1 sachet of instant dried yeast, 1 small plastic water bottle, 120 ml of hydrogen peroxide (6% strength), a large squirt of washing up liquid, 3 tablespoons of water, food colouring.
You should have most of the ingredients at home, except for the hydrogen peroxide. You can buy this from any chemist. Hydrogen peroxide has a shelf life and over time it changes to water. So don’t use an old bottle that’s been lying around your house for months.
If you do not have safety goggles, then an adult should do this part. Hydrogen peroxide can irritate your eyes and skin and safety precautions are written on the bottle. Pour the hydrogen peroxide into the empty water bottle. Then add the washing up liquid and food colouring. You can stir the mixture gently. Now place the bottle in a large deep tray or in the sink as it can get messy.
Children can do this part of the experiment. In a separate container, mix the dried yeast and water. Then quickly pour this mixture into the bottle. Do this quickly if you want some drama.
Try different food colours.
hydrogen peroxide is available in different strengths, try the same experiment with different strengths.
Try different shapes containers, the longer and narrower the container the quicker the foam rises up and out.