"Without harvesting machines to gather crops when they're ready, farming would be much more difficult and time-consuming. In the pages of this . . . book, budding farmers will . . . learn how these . . . pieces of equipment operate through . . . accessible language and . . . photographs of machines at work. Fact boxes add . . . information throughout the narrative, while a concluding activity helps readers review essential concepts they should retain"--Provided by publisher.