Simple drawing that should be used as a template to add on white light being emitted (from sun and ceiling light) simple drawing on TV (I recommend using max 3 colours for simplicity) colour the table and chair any colour student wants different wavelengths of light being emitted from the television (in the three colours used in the image on the TV wavelengths of light being reflected by the moon reflected light being absorbed by (receptors in) the eye light not absorbed by the table reflected into eyes There is a wide scope for this activity to be a really challenging ‘end of topic’ consolidation task or just a simple lesson plenary. I designed this as an end of topic REVISION activity to bring together subtopics in the KS3 WAVES topic. My Yr8s loved it so hopefully your students will too, let me know how you get on with it!