When Amelia Bedelia helps out at the school science fair, she finds an exploding volcano, some UFOs, and a mad scientist!

From School Library Journal
Kindergarten-Grade 3-The beloved Amelia Bedelia is back, this time as a helper in the school science fair. Naturally, the literal-minded housekeeper runs into all sorts of misunderstandings, from insisting children are way too young for "makeup" tests, to wondering why Dr. Dinglebatt, the judge, is a mad scientist. Havoc breaks loose when Amelia Bedelia adds too much baking soda to a volcano model, and when the professor's hairpiece falls on a computer, a child scr ...