Simple homemade batteries are described that can be made from items found in the home or school lab. These experiments help students understand how to wire them up, the origin of current, voltage and power, as well as the chemistry that...

Here is described a simple process to 'put a voice on a sunbeam' and transmit it over a distance. It is a fascinating example of amplitude modulation of light using sound vibrations. It then describes how the modulated light is detected...

An activity that will have you questioning which is in control, your eyes or your brain? This activity has students constructing simple paper tubes to investigate how the eyes work.

This experiment and video demonstration shows how students can break up water into hydrogen and oxygen gas with a simple electrolysis device.

Described is a simple low cost home-made device that converts the radio wave energy from a mobile phone signal into electricity to light an LED. No battery or complex circuitry is required. The device can form the basis of a range of...

Discover how Gregor Mendel uncovered the key principles of inheritance using a simple, familiar system: the pea plant. Learn about Mendel's life, his experiments, and his legacy.