character: Mike Mulligan
topic: The Role of Steam Shovels in Modern Construction
grade: 2
subject: Social Studies
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character: Mary Anne
topic: Teamwork and Efficiency in Construction
grade: 2
subject: Social Studies
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character: Mr. Mulligan
topic: Innovation in Construction Equipment
grade: 2
subject: Social Studies
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character: Construction Workers
topic: The Impact of Machines on Jobs
grade: 2
subject: Social Studies
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