Learn all about the hardest-working machine on the farm in a board book shaped like a real tractor!I am a tractor.I work on a farm.Readers may want to put on their work gloves for this fun and sturdy board book shaped like a tractor! Read along as this mighty tractor helps plow fields, pull heavy machinery, and do more hardworking tasks down on the farm!Little tractor enthusiasts will love seeing this tough tractor in action in this latest book in the bestselling I Am a Truck series!