|Air date||March 17, 1977|
|Season||Season 8 (1976-1977)|
|Sponsors||M, N, 3|
- Cookie Monster and Ernie: Cookie Monster tells Ernie that he's going on a diet and won't take his cookies, until Grover tells Cookie that he looks sick. (EKA: Episode 0232)
- Two monsters illustrate abierto and cerrado.
- George the Farmer demonstrates "in" and "out".
- Song: "Cooperation".
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|Episode 1003||Episode 1005|