Mr. Stevenson rewards students only when they answer questions correctly. as a result, the students have stopped participating in class. Mr. Stevenson most clearly needs to be informed of the value of shaping.
Stewart's father, Mr. Stevenson, is a middle-aged guy who has a short fuse. He is a Highland High School instructor in the early episodes ( No Laughing, Citizen Butt-Head ). It's conceivable that Stevenson left Highland High because he had had enough of Beavis and Butt-antics.
Mrs. Stevenson is a "disabled" person who is confined to bed because of an unidentified disease or ailment. Mrs. Stevenson continually (and ineffectively) calls her husband during the entire radio drama because she is concerned for her safety.
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