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Synopsis

Boom and jib. These are two crane parts with fun names. They are the long arms of the machine, moving to lift heavy materials to skyscraper heights. In this low-level read, children will learn how the many parts of a crane work together to build towering structures.

Durée: 5 minutes (00:04:51)
Date de publication: 01/08/2017; Unabridged; Copyright Year: — Copyright Statment: —

• Jeunesse