The easiest way to remember the colors of the visible light spectrum is Roy G Biv. Remember it from your school days? Here’s a really great activity involving food (that’ll get any kids attention) to use with a lesson or unit about light. It would be a fabulous culminating activity for a science unit-have a light party and serve ROY G BIV Jello!! Fly to My Window gives you great instructions and tips on making this colorful treat at home!!