Science - Light - Lesson 4 The resources you will need can be found on the first slide.

Periscopes - what are they and how do they work? Scroll down the webpage to 'Challenge 05 - Make a periscope' to find the video.

Periscopes If you haven't got access to the resources, watch this video from 0:50 onwards and complete a labelled diagram of a periscope. You can still have a go at completing the predictions and explain how a periscope works.