Children can learn about bulldozers, hydraulic excavators, and other construction equipment at this fun Web site. Cartoon animations show the operation of the main systems in these vehicles. The interactive applications give the user an operator's view of the machines and even show the location and function of several controls. While keeping a fairly simplistic perspective, the material explains some more advanced concepts such as hydraulic cylinders. Three methods used in construction to transform unwanted materials into something useful are also highlighted.
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