Dr. Nobel Price invents "entrada"

Miss Blechman is visiting Sesame Street and pesters Luis to try and guess what she does for a living. Given her clues of working in a classroom, receiving apple cores from young Grouches, and dirtying up her blackboard, Luis knows that she is a Grouch teacher and is there to see Oscar, who was her b Miss Blechman gives Oscar a Grouch listening test, identifying the various nasty noises around them. Sponsors: N, Z, 9