Making slime with PVA glue

Humboldt penguins

Baby mess-free colour mixing experiment

Making a sand timer

Clockwise and anticlockwise with cogs

Friendly robin

Solids and liquids - recycling wax crayons

Chemical reaction lava lamp

Years and orbiting the Sun

Watching the moon

Fluorescent food dyes

Colour changing poinsettia

Coloured shadows