In this lesson, learners develop a robot arm using common materials. Learners explore design, construction, and teamwork, as well as materials selection and use. The robot arm must be at least 18 inches in length and must be able to pick up an empty Styrofoam cup. Teams of learners must agree on a design for the robot arm and identify what materials will be used. Learners will draw a sketch of their design prior to construction. Resulting robot arms are then tested and checked for range of motion and satisfaction of the given criteria.