Video Description: Jack Black defines the word 'Octagon' with help from Elmo.
Sesame Street is a production of Sesame Workshop, a
nonprofit educational organization which also produces Pinky Dinky Doo, The
Electric Company, and other programs for children around the world.
Sesame Street uses combinations of animation, puppets, and live actors to stimulate young children's minds, improve their letter and word recognition, basic arithmetic, geometric forms, classification, simple problem solving, and socialization by showing children or people in their everyday lives..