Science Experiment Idea Generator

What this generator does

Suggests a practical to run, drawn from a list of ideas that work in an ordinary classroom rather than a research lab. It supplies the idea; the method, risk assessment and equipment list are yours.

What you'll get

This generator draws from a hand-checked list of 12 entries. Here is a spread of 6 of them, so you can see the style before you generate:

• Grow your own rock candy crystals from a sugar solution over a few days.
• Make a simple density tower by layering honey, dish soap, water and oil.
• Grow mould on bread in different conditions to see what speeds it up or slows it down.
• Build a balloon-powered car and test how far different amounts of air push it.
• Test which materials insulate an ice cube best against melting.
• Make a rainbow in a jar by layering liquids of different densities and colours.

A fixed sample of the list, not a live draw — your own results are picked at random from all 12, without repeating until the list runs out. Original HEKNO-curated list of common, low-cost classroom/home science experiments. Last reviewed 2026-08-03.

How to use this tool

1. Press generate for an experiment idea.
2. Look up full, safe instructions before trying it, and generate again for another idea.

Common use cases

• Science fair inspiration
• A quick classroom demo idea
• Weekend activity ideas for curious kids

Practical tips

• Carry out your own risk assessment before running anything with a class, whatever the idea sounds like.
• Check the equipment is actually in the cupboard before promising a practical to a class.