Big Tractors: With Casey & Friends

It's Christmas time at Happy Skies Farm! Tillus the worm, Big Red, Sammy and the rest of the team are excited to celebrate the season. But Casey the farmer is busy working: feeding animals, repairing fences and planning for the year ahead. With so much to do, Casey wonders if she'll have time to prepare for the holidays. That's when Tillus and the team unite to make this Christmas extra special for their busy friend.

Holly Dufek has spent nearly 15 years writing and editing educational curriculum for publishers such as Holt McDougal, National Geographic Education and Riverside Publishing. Holly has worked to develop content to enrich the National Common Core Standards for elementary through high school classrooms. Born in Lacrosse, Wisconsin, she attended the University of Wisconsin-Madison for her bachelor's degree, double majoring in English and History. Her first classroom experience was substitute teaching while in graduate school at DePaul University for her Master's in Education. Holly did her practicum in U.S. History. Licensed to teach History and English through the 12th grade, Holly decided to turn her focus on curriculum development. A Year on the Farm is her first published children's book. Working with an amazing design team to bring agricultural education to life has been one of the most enriching experiences for her.