第七课

Unit 3第三单元

Materials in Life生活中的材料

1. Books, bookcases, doors and windows are made of materials.

书本、书橱、门窗等物品都是由材料制成的。

2. What are the common materials in life? What characteristics do they all have?

生活中有哪些常见材料呢？它们都有哪些特点呢？

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 glass 玻璃

1. Through the glass window, you can watch the stars at night and enjoy the sun during the day.

透过玻璃窗，夜晚能观看星星，白天能享受阳光。

2. What are the characteristics of glass?这是利用了玻璃的什么特点呢?

Activity process活动过程

3. What are the characteristics of glass?玻璃有哪些特点?

4. I found...我发现.....

5. Be safe! 注意安全!

6. Glass is generally transparent and fragile.玻璃一般具有透明、易碎的特点。

7. Compare the transparency of different glass.比较不同玻璃的透明程度。

8. The text could not be seen through the glass.透过这种玻璃看不清文字。

9. Where's the other glass?其他玻璃呢?

10. What are the uses of glass in life?玻璃在生活中有哪些用途?

11. I know...我知道.....

Expand activities拓展活动

12. Observe and record the applications of other transparent materials in life.

13. 观察并记录其他透明材料在生活中的应用。