🌋 Fizzy Volcano Tray
Drip vinegar onto bicarb and watch the whole tray fizz.
🔍 Discover·20 min·$2·Ages 2–5·👶 Easy·🧑 Hands on · 3 min prep
⚠️ Safety first
Stay in the room. Keep the mixture out of eyes and mouths, and do it in a tray. Not for under 2.
You know your child best — supervise the whole time and skip anything that isn't right for them. See our Terms.
Why this is good for your child
- ✓Prediction
- ✓Cause and effect
What you need
Bicarbonate of soda · Vinegar · Pipette · Tray
Nice to have — not needed today ($2)
Search Amazon US for bicarbonate of sodaHow to do it
- 1.Spread bicarb over a deep tray.
- 2.Give them a pipette of Colored vinegar.
- 3.Drip and watch it fizz.
How it actually goes
- ⏱ 30-second set-up —
- Thirty seconds: put bicarbonate of soda, vinegar, pipette on a tray or a clear bit of floor, and sit down next to it before you call them over.
- 🧑 What you do —
- Show it once, slowly, without talking over yourself. Then hand it over and stop helping unless they ask.
- 👶 What they do —
- Touch, shake, sort and compare until it makes sense to them.
- ✅ What success looks like —
- At 2–3 they'll do it their own way, not yours, and stop after five minutes. Both of those are fine.
- 🧺 How to put it away —
- Everything back into one basket or tray, carried back to its spot by them. Naming the spot out loud is what makes it stick.
- 📈 When they outgrow it —
- Older? Add a blindfold or a guessing round — same thing, harder.