The World of Tomorrow & Is There a Doctor in the House?

The World of Tomorrow: Binky had already failed Mr. Ratburn's class once and went on the sleepover at the Science Museum. This year, they are going again and he is just as bored as he was the first time. Interested in a new unopened exhibit, he sneaks in when everyone else is asleep, only to be trapped in one of the exhibits. After a dream where he is trapped in the future, he holds a new interest in science.
Is There a Doctor in the House?: Arthur and D.W. try to help out around the house when their mom is sick, but they end up making things worse when they forget a few things. When their dad is sick too, they try to fix their mistakes, fearing that they should have to learn to take care of things if their parents stay sick.