For grown-ups
What KitchenLab does
Every experiment is a Predict → Observe → Explain loop: your child guesses what will happen, does the real experiment with kitchen materials, reports what they saw, then finds out why. Committing a guess before seeing the result is one of the best-evidenced ways to make a science idea stick — even a wrong guess helps, because the surprise is what the brain remembers.
Please do these together
A grown-up should be with your child. Every experiment is chosen to be safe — no heat, no flames, no sharp tools for the child (a grown-up does any cutting). Nothing here is meant to be tasted. Wipe up spills so no one slips.
Why the cousin only asks
Cricket, the curious cousin, never hands over the answer — she only asks good questions ("what do you think? why?"). That is on purpose: a child learns far more by making and testing their own prediction than by being told. There is no score, and a wrong guess is celebrated as a real scientist's surprise.
Print a lab card
Every experiment has a printable lab card — materials, steps, and boxes to write a guess and draw what happened. Keeping a paper record is exactly what real scientists do, and it takes the learning off the screen.
The experiments
- 🌋 The Fizzy Volcano Needs: 1 spoon of baking soda, a little vinegar, a small cup, a tray (for spills). Idea: It fizzed! The baking soda and vinegar make a new gas called carbon dioxide. The gas needs room, so it pushes up as fast bubbles — that is the foam climbing out of the cup.
- 🫗 Oil and Water Needs: a clear cup of water, 1 spoon of cooking oil. Idea: The oil floated up and made its own layer! Oil and water do not like to mix — and oil is lighter than water, so it rises to the top. That is why salad dressing has to be shaken.
- 🍇 Dancing Raisins Needs: a clear glass of fizzy water (soda water), a few raisins. Idea: They danced! Tiny gas bubbles stuck to the bumpy raisins and lifted them up like little balloons. At the top the bubbles pop, so the raisins sink — then new bubbles carry them up again.
- 🌈 The Color Wheel Needs: a white plate, colored candies (like Skittles), a little warm water. Idea: The colors spread out into a rainbow! The candy coating dissolves in water, and the color travels with it. The stripes stay separate for a while because the colors move at the same gentle speed and do not push into each other.
- 🧻 Water That Climbs Needs: a strip of paper towel, a cup with a little colored water, an empty cup. Idea: The water climbed up! Paper towel is full of tiny gaps, and water is a little bit sticky to itself and to the paper. So it pulls itself up through the gaps — this is called capillary action. It is how plants drink from their roots.
- 🧊 Does Ice Float? Needs: a clear glass of water, an ice cube. Idea: It floated! When water freezes it spreads out a little, so ice is lighter than the same amount of water. Lighter things float. That is why icebergs float on the sea.
- 🍎 Keep the Apple Fresh Needs: 2 apple slices (a grown-up cuts them), a little lemon juice. Idea: The lemon slice stayed fresher! Air turns cut apple brown (like rust on metal). Lemon juice has vitamin C, which blocks the air from doing that — so the lemon slice keeps its color longer.
- 🧂 Melt the Ice Faster Needs: 2 ice cubes on 2 plates, a pinch of salt. Idea: The salty ice melted faster! Salt makes it harder for water to stay frozen, so the ice turns to water at a lower temperature. That is why people sprinkle salt on icy sidewalks in winter.
- 🫑 Scaredy Pepper Needs: a shallow bowl of water, a shake of ground pepper, a drop of dish soap on one finger. Idea: The pepper zoomed to the edges! The top of water has a stretchy "skin" called surface tension, and the pepper rides on it. Soap breaks the skin where you touch, so the rest of the skin pulls back — and drags the pepper along for the ride.
- 💧 Bend the Water Needs: a plastic comb or spoon, a wool sweater or your dry hair, a very thin trickle of tap water. Idea: The water bent toward the comb! Rubbing rubbed a tiny electric charge onto the comb (static electricity), and that charge pulls on the water from a distance — no touching needed. It is the same crackle you feel taking off a wool sweater.
- 🍬 Warm or Cold? Needs: 2 clear cups (one warm water, one cold water — a grown-up pours), 2 spoons of sugar, a spoon to stir. Idea: The sugar dissolved faster in the warm water! Warm water’s tiny bits move faster and bump the sugar apart more quickly. That is why it is easier to stir sugar into warm tea than into cold lemonade.
- 🥚 Make an Egg Float Needs: a tall clear glass of water, a raw egg (in its shell), lots of salt (about 6 spoons), a spoon to stir. Idea: The egg floated! Salt water is heavier (denser) than plain water — so much that it can hold the egg up. It is the same reason people float so easily in the very salty Dead Sea.
Honest note: KitchenLab is a calm way to practise thinking like a scientist — it is practice, not a promise of a science grade. There is no score, no streak, and nothing to buy. Everything runs on this device; there are no accounts, and nothing your child does leaves the device.