Examines different kinds of trucks and their roles in the transporting of goods, including such specialized trucks as oil tankers, container trucks, and tipper trucks.
Brief text explains how cranes lift and move heavy objects and how they are used in such places as construction sites, docks, factories, warehouses, and railroads.
Examines how machines are used for different types of farm work, including preparing soil, helping crops to grow, harvesting crops, and in the farming of livestock.
