A teaching presentation discussing natural resources and how humans interact with them.
用这个教学资源调查chemical properties of materials在科学课。
本演示文稿涵盖以下主题：
- 什么是天然材料？
- 足智多谋的人类
- 建筑社区
- 重金属
- 敬业的时尚追随者
- 现代使用天然材料
A class activity and independent investigation have been included at the end of the presentation.
与此结合使用Earth Overshoot Dayand生态足迹教育海报。
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