The instructions say to use an old CD case to make the rhombus. I wanted something the students could easily cut themselves, so tried an overhead transparency and it really works. As our Yr 7 & 8's have ipads, I found the size given in the instructions good for a phone but too small for the Ipad. So I found some thicker book cover plastic, which can still be easily cut with scissors, and doubled the size of the rhombus. With the room darkened it looks fantastic - all the teachers were excited so it will be one of the activities we do for our science week which we run next week. Give it a go if you're looking for something fun to do!http://www.boredpanda.com/3d-hologram-s ... setheboss/
Kathryn
