Trouble making twins Kasey and Kelly are excited for April Fool's Day, and plan to pull a "twin switcheroo" on their classmates to see if anyone notices the difference.

Grandma, Grandpa, and the grandkids enjoy April Fools' Day on the farm. It's a spring morning on the farm. Grandma is happy the grandkids are visiting-they've picked just the right day!-and Grandpa is fixing breakfast. Suddenly his grandson reports that the cows have got loose! He thinks Big Brown Bessie just stepped on a goose! "Good gracious," Grandpa says as he pours himself a glass of milk. When his granddaughter shouts the chickens are out, Grandpa...

When Nancy, George, and Bess attend an April Fool's Day party at a new schoolmate's house, each guest is to bring a gag; when two of the guests' fancy new electronics go missing, Nancy knows something's up.

It is April Fool's Day, but Max needs to learn that not all pranks are funny.

It's April Fools' Day -- and Judy's birthday -- and Mr. Todd has a trick or two of his own planned in the latest Judy Moody tale for newly independent readers. April Fools' Day just happens to be one of Judy Moody's favorite days of the year. And this year she's got one thing on her mind: the perfect prank she's going to play on Mr. Todd, thanks to an awesome present from her brother, Stink.

At Green Lawn Elementary, the entire school becomes involved in a mystery when Mr. Bones, the skeleton in the nurse's office, disappears.

On April Fools' Day, Alice gets tired of Horace's pranks and teaches him that good friends can have fun together without mean tricks.

While she is out on maternity leave, Mrs. Heath, librarian at Happyland Elementary School, is shocked and surprised when she receives a DVD from her students showing some very bad library practices taking place in her absence.