character: Mayan Artisans
topic: Innovations in Metalworking Techniques
grade: 9
subject: Chemistry
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character: Mayan Culture
topic: Utilization of Metals in Daily Life
grade: 9
subject: Chemistry
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character: Modern Chemistry
topic: Metalworking Techniques and Their Chemical Foundations
grade: 9
subject: Chemistry
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character: Ancient Civilizations
topic: Technological Advances in Metalworking
grade: 9
subject: Chemistry
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