The Lousy Week & You Are Arthur

The Lousy Week: When Muffy gets head lice, she is nervous about how her friends will feel. However, it ends up spreading to everyone at school, forcing the students and staff to be checked everyday and instead of doing homework, are forced to stay up late and have their parents take out nits from their hair.
You Are Arthur: Arthur is training for and running a 3k race, and the viewers can see what happens through Arthur's point of view.