HYDRAULIC BULLDOZER

Since the first hydraulic press was created in the end 18th century, 
the hydraulic transmission technology has been developed for about 
three hundred years. This fun build it yourself model uses 3 hydraulic 
systems to drive the model and realize the corresponding actions. It 
introduces kids the application of pascal's principle and the law of 
conservation of energy, and nurtures children's hands-on skills and 
curious minds. Learn through play makes learning fun for kids!