The ink in water based felt tip pens consists of different pigments. This practical describes how to separate mixtures of liquids in order to investigate colour.

This practical activity shows how to separate mixtures of liquids to investigate colour using ink in water based felt tip pens.

An activity where children can see coloured water stain flower petals.

This issues introduces a range of activities to investigate colours and a booklet from Froglife with tips for encouraging wildlife in ponds. We give an overview of a new guide studying microorganisms in primary science and making sundials to support teaching the orbit of the Earth around the Sun.