Celebrate 100 days of school with a fun STEM challenge. This works well with kindergarten, first grade, and second grade engineers working together or alone in centers. A great addition to 100 day centers. This resource uses the engineering design process to solve problems. Your kids will have fun building a desk that holds 100 papers, a bridge that holds 100 pennies, and a tent made with “poles” that are made of 100 Cheerios. Each challenge has a bonus challenge to help differentiate.