Tinker bins consist of 19 interactive bins, each containing 8 challenges, for a total of 152 challenges that integrate Science, Technology, Engineering, and Math (STEM) into your everyday curriculum. Tinker bins can be used as a way to begin each day, for students who complete their work before others, during STEM encore, or to enhance your after / in-school STEM club. The challenges are written to promote the engineer design process (Ask, Imagine, Plan, Create, Test, Improve) and higher order t