With STEM Explorers Bridge Builders young engineers can build bridges inspired by real-world structures. As they follow along with the included activity challenge cards and build a suspension bridge, air bridge, deck arch bride, beam and cable bridge and more, children will learn the basics of civil engineering principles as they relate to designing bridges. This set has all the construction pieces your child will need to complete the projects, and as they work their way through each challenge, there is a photo example of a real structure. Once your child has completed the projects, there are plenty of construction pieces for them to create and build their own designs and enjoy free play.