You don't need a science kit or special equipment to do real science at home. Most of what you need is already in your pantry, bathroom or recycling bin. Here are seven experiments that look impressive, teach genuine science, and use supplies you almost certainly already have.
1. Oobleck — The Non-Newtonian Fluid
You need: Cornstarch + water
Mix two parts cornstarch to one part water. Hit it hard — it feels solid. Hold it gently — it flows like liquid. This is a non-Newtonian fluid, and it behaves differently under different amounts of force. Kids can spend an hour fascinated by something that cost less than $2 to make.
2. Static Electricity Butterfly
You need: Tissue paper, scissors, a balloon
Cut a butterfly shape from tissue paper. Rub a balloon against your hair, then hold it near (not touching) the butterfly. The butterfly will jump and "flutter" toward the balloon. Great introduction to static electricity and charged particles.
3. Walking Water Rainbow
You need: Food colouring, water, paper towels, clear cups
Set up alternating cups of coloured and clear water connected by folded paper towels. Over a few hours, the coloured water "walks" through the paper towel into the clear cup. Capillary action — the same process that moves water through plant stems — made visible.
4. Homemade Compass
You need: A needle, a magnet, a leaf, a bowl of water
Rub a needle along a magnet 30 times in one direction. Float the needle on a leaf in a bowl of still water. It will rotate to point north. Real navigation science using nothing but friction and magnetism.
5. Lung Capacity Balloon
You need: Balloons, a ruler, a measuring tape
Take one deep breath and blow it all into a balloon. Tie it off and measure the circumference. Repeat three times and average. Compare between family members. Then try: does exercise change lung capacity? Run for two minutes, then measure again.
6. Chromatography Butterflies
You need: Coffee filters, water-based markers, water
Draw a thick dot of colour in the centre of a coffee filter. Fold it in half, then quarters, and dip the point into a shallow dish of water. Watch the colours separate as the water spreads outward. Black marker famously reveals it contains multiple hidden colours — a great "surprise" moment.
7. Celery and Food Colouring
You need: White celery stalks, food colouring, water, clear glasses
Place celery stalks in glasses of strongly coloured water (different colours). Wait 24 hours. The celery will have absorbed the coloured water up through its stem — you can see the coloured veins clearly when you slice the stalk. This demonstrates how plants transport water from roots to leaves.
Making It More Scientific
For any of these experiments, add a simple scientific method structure:
- Predict — what do you think will happen?
- Observe — what actually happened?
- Explain — why do you think that occurred?
- Change one thing — what would happen if you altered a variable?
That structure turns a fun activity into genuine scientific thinking — and it's the same method used in real research labs worldwide.
Ready to explore? Browse our full range of STEM toys, kits, posters and resources at stemology.com.au — trusted by Australian families and educators.
