Season 4

D.W. discovers that she can get her own library card and feel the power as Arthur has, but she can not write her own name. When she does and waits a week for a book to come in, she borrows it but never reads it because she thought she might destroy it.

After Arthur worked hard to build a model airplane, D.W. throws it out the window to see if it flies and the model exploded. Arthur gets extremely mad and strikes her.

While the kids played hide and seek, a snake shows up and Arthur brings it home.

Tired of playing with Muffy because she never played soccer, Francine starts to hang out with Jenna. So Muffy searches for a new friend.

D.W. obtains poison ivy while playing a game. Buster recaps his problem with asthma and how everyone was afraid of him being injured or getting themselves injured.

The girls prank the boys by inviting them to Muffy's celebration for the new Scare Your Pants Off Club Books.

Arthur and his friends enter a contest that they have to wait five years to find out the winner.

When D.W. makes up a fake science museum, she makes up science to go with it.

A blizzard strikes Elwood City and all the kids have to return home. But before they do, they have to hand in their reports. Francine does not finish so she has to write a longer report over the snowstorm days while the adults are scrambling all over the city, losing electricity and supplies.

Mr. Ratburn stays at the Read's house because the roof collapsed from the snow. Surprisingly, Arthur begins to like Mr. Ratburn.

Grandma Thora tells D.W. a myth. This makes her show Arthur that she would make a better story than the Veggiemorphs using mythologies in her own version.

Prunella receives a Polly Locket for her birthday from her sister. But she also gets one from Francine and Prunella did not like the gift. making Francine unhappy. Then Ghosts visit Prunella to tell her about how Francine worked so hard to get the doll.

Binky Barnes has a favourite pastime when Bug Week comes along: Butterflies. He worked very hard to collect these bugs for his report especially a hard blue-coloured kind.

The kids try to stop Francine from playing the drums and singing at the same time for the Talent Show.

Arthur believes that Buster is sad because Buster could not bring his dad to the Father's Day Picnic to have a fun time because his dad is divorced. So Arthur tries to help him by borrowing a father for Buster just for that day.

Flashpants were all that Prunella wanted for her birthday. When she gets a hint from her sister, she gets excited about getting them, but the gift was not what she expected.

Arthur and his friends are facing impossible tasks, and they encounter a device that could help them fix all those problems, but they do not know what it is.

Buster and Arthur feel like that they are boring and they think they are not good at anything, so they try to imitate each others' lifestyle.

Cellist Yo-Yo Ma and Saxophonist Joshua Redman were invited by Grandma Thora and D.W. They battle over what kind of music is better than the rest-Classical or Jazz.

Arthur enjoys a show meant for younger kids and his friends tease him for being a baby.