STEM Engineering & Design KitEncourage your child to come up with their own designs or they can follow the Challenge Cards, which include how to build different pieces of equipment on a playground (a twisty slide, a swing set, a seesaw, and more). Reproducible worksheets based on the engineering design process are included in the Guide. Slide measures 6"L. Includes 104 pieces including 10 double sided Challenge cards, and activity guide with reproducibles. Ages 5+ Grade K+.