My favorite lower elementary STEM center! These STEM tasks are designed for building bricks like LEGO ®. These challenge cards are easy to set up but highly rigorous. Not only will your students be working creatively to solve problems, they will be reading, writing, and using math skills. What You'll Get: Includes original set plus sets listed below!Basic STEM Mats SetTeacher instructions and sample imagesLetter to send home to parents, caregivers, and friends to ask for donations10 basic STEM M