A children's novel by Andrew Clements. Nicholas Allen has plenty of ideas. Who can forget the time he turned his third-grade classroom into a tropical island, or the times he fooled his teacher by chirping like a blackbird? But now Nick's in fifth grade, and it looks like his days as a troublemaker are over. It doesn't take long for frindle to take root, and soon the excitement spreads well beyond his school and town. His parents and Mrs. Granger would like Nick to put an end to all this nonsense. But frindle doesn't belong to Nick anymore. All he can do now is sit back and watch what happens.