We are starting to build our engineering design prototypes. One of the safety issues I have identified is tripping over untied shoes. I think this important for little kids and for older people, like my gramma. I thought it would be good if we could find an easy and kind of cheap way to make shoes that self tie. And, of course, I want to find a way to power it with either human energy from walking or from solar energy. I have not used power tools before so that is part of what I have to figure out as I work on my project. ~E
