Cranes are tools used by construction workers. Cranes lift heavy objects. They place them somewhere else.
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Have you ever seen a crane at work? What was it doing? What kind of crane was it?
Have you read about another construction machine? How is its job similar to a crane’s? How is it different?
A crane has many parts that work together. What are other machines that have many parts? What would happen if one of the parts stopped working?
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