Big Bird takes a picture of Mr. Snuffleupagus. He's sure that the photograph will prove the existence of his friend to Gordon, Susan and David -- but the only thing they see in the picture is an old rug and a furry piece of rope.
While Gordon prunes a tree, he explains that some branches have to be cut off because they hurt the rest of the tree. The remaining branches now have more room for the sun and can get more tree food (or sap) and rain.
As they watch a football game, Tom is happy and Gordon is sad when the Blue team gets the ball; but Gordon is happy and Tom is sad when the Red team gets the ball. They are both sad when it begins to rain.
Members of the cast demonstrate that U is for Under, Unlock and Unwrap.
Ernie and Bert: Ernie approaches Bert in a harried manner, talking rapidly. Bert tells him to talk slower so he can understand him. Ernie says, slowly, that Bert's bread is burning in the oven, which causes Bert to speak in the same rapid, harried manner. (EKA: Episode 0288)
Cartoon: Letter U salesman
George the Farmer demonstrates "fast" and "slow" by going back and forth on a fence, and in a rocking chair.