Understanding light reflection: Build your own periscope

Mirrors change the direction of light and reflect it. We can demonstrate this practically by making a periscope. Light is reflected from one object into a mirror and then onto the other mirror before reaching your eyes. Collect your materials and find out for yourself!
For more brilliant hands-on science projects for primary-school children download our subscriber learning pack, Experiments and science fun for KS1 and KS2.

Written in association with primary science blog Science Sparks, it's packed with easy but effective ways to demonstrate scientific concepts to children (no specialist knowledge required). Enjoy!