Big Tractors introduces children to the world of modern farming, showing how the biggest, most powerful tractors handle the demanding jobs of pulling and powering on the farm. This book is filled with colorful action photography, fun illustrations and a cast of cartoon equipment characters. Narrated by Casey the farmer and Tillus the worm, Big Tractors teaches readers how Big Red and Sammy–the two biggest tractors on the farm–use their powerful muscles to work in the field with the rest of the team. Learn about the science of farming and discover how advanced technology makes Big Red and Sammy special. Recommended for ages 4-8.