Japanese Temari Cards

I took a graduate class at St. Norbert years ago on Math and Art. Here is one of the projects from that class. I did these with students about 10 years ago, but I think I will do these again. I did them with students in 5th--8th grade. It might look complicated but the pattern of stitches makes this quite easy. First students poke the holes with a push pin onto black tagboard (I have copies of the pattern). Next students use about an arm's length of crochet string and begin making their diagonal stitches one way around the circle. When they have gone all the way around they go back the opposite way to make these "peaks". If students do this correctly the back has all straight stitches. I have directions--only through snail mail... let me know if you want a copy.