character: Galileo Galilei
topic: The Evolution of Timekeeping Devices in History
grade: 6
subject: Geography
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character: Hippocampus
topic: Historical Methods of Measuring Time
grade: 6
subject: Geography
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character: Isaac Newton
topic: The Impact of Astronomy on Timekeeping
grade: 6
subject: Geography
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character: Charles Piazzi Smyth
topic: Advancements in Timekeeping and Navigation
grade: 6
subject: Geography
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