All children need to learn how to tie their shoes. But have you ever wondered how many different ways there are to lace up your shoes? In fact, there are more than 43,000 ways to lace up his shoes and Eric shows us some of them. It's not magic ... it's mathematical! Pedagogical side: This segment explores notions of patterns: above / below, left / right, inside / outside, red / black, zigzag / crisscross, etc., and how to follow directions. We illustrate how mathematics is used every day for practical and creative purposes - it's not just for mathematicians!