Arthur and the Big Riddle & Double Dare

Arthur and the Big Riddle: Arthur goes on the TV game show Riddle Quest against a really smart contestant. In the final round, Arthur must decide between winning and his friends. Alex Trebek guest stars as Riddle Quest host Alex Lebek.
Double Dare: Arthur, Buster, Francine, and the Brain resent the large amount of homework they are assigned, especially because the Dark Bunny special is airing, which culminates in a large number of dares issued to skip school. However, the next morning, everyone agrees to call off the plot due to guilt (personified by a giant clam). Francine fails to receive the message and carries on with the dare.