About a month ago I saw a boy at school running around with a star like this. I was not very familiar with the kid but I couldn't resist this origami looking ornament he was carrying around. So I asked him to explain to me how to make this. Frankly, I didn't understand it at first. It's like a math puzzle. Are you still with me....? Just try, it isn't that hard. It's modular origami. See here how it's done.