"The World Record"--Why is Buster walking backwards, and Muffy not talking? They're trying to set world records of course! Everyone tries to go it alone, but Arthur and the gang discover that working together more readily creates success, fun -- and the world's largest pizza! "The Cave"--Stalactites and stalagmites and bats, oh my! Arthur thinks his class trip to the Clark Caves will be really cool. But won't it be, um, dark in there?