The day-to-day business of growing and harvesting crops for food is brought to dramatic life in this Nebraska Children’s Agriculture Book of the Year as children see farmers and their machinery hard at work. Farmers lifted and hauled, cut and chopped, plowed and planted, watered and mowed by hand or with horses and simple equipment–until the first tractor appeared. Now there are tractors with eight wheels and tires big enough to stand in, skid steers with buckets for lifting, and sprayers that look like huge prehistoric birds, as well as many other modern computerized farming machines. Here’s a look at farm machinery in the modern age.