The only thing better than finding a new book to read to your class, is when you find one that works with several grade levels and results in different projects. This summer I ordered "Lines that Wiggle" and it did not disappoint.
This week I tried the kindergarten lesson that I titled "Rainbows that wiggle" and it was well received. Late I will be trying the "op art" version with my older students. The lesson plan with worksheet and step by step examples is available here.