All projects
19 projects · page 2 of 2
🔒 PremiumRed Cabbage Colour Changer
Red cabbage juice is a natural indicator - it turns pink in acids and blue/green in alkalis.
🔒 PremiumSalt or Sugar Crystal Garden
Dissolving, saturation and evaporation - crystals form as water leaves behind the salt or sugar.
Shoebox Solar Oven
Children explore renewable solar energy and heat absorption by building a simple oven that traps light and converts it into thermal energy. This introduces fundamental thermodynamic concepts such as insulation, reflection, and radiation in a delicious, hands-on way.
Tin-Can Telephone
Sound travels as vibrations along the tight string from one cup to the other.
🔒 PremiumUnder-the-Sea Jelly Aquarium
Making jelly shows how a warm liquid sets into a wobbly solid as it cools, and suspending fruit 'fish' introduces the idea of setting things in layers.
🔒 PremiumWater Filter from a Bottle
Filtering removes bits from dirty water; layers trap different sizes of dirt (but don't make it safe to drink).
🔒 PremiumWormery in a Jar
Worms mix and tunnel through soil — you can watch them build layers and help the garden.