Arthur - Season 1

"Arthur's Eyes": After Arthur has an eye exam, he learns that he needs to wear glasses. But when he wears them at school for the first time, Francine calls him a "Four Eyes," and the other kids laugh at him. So he tries to avoid wearing his glasses (imdb)

"Arthur and the Real Mr. Ratburn": Arthur and his classmates are afraid of their new teacher Mr. Ratburn. (imdb)

D.W. All Wet: D.W. enjoys her field trip at the aquarium...until she sees an octopus. It gets so hot in Elwood City that Mr. Read suggests that the family should go to Bear Lake. But D.W. refuses to go because she thinks that there are octopuses in the lake. (imdb)

D.W.'s Imaginary Friend: Arthur doesn't like D.W.'s imaginary friend Nadine. When Arthur and Buster want to go on this new ride at Wonder World, D.W. begs to go on the ride also. But Arthur thinks that D.W. will embarrass him talking about Nadine in front of his friends. (imdb)