3-D shapes (I)
A first look at prisms, cylinders, pyramids, cones and spheres: finding them in everyday objects, telling which have a point and which can roll, and sorting them. P1 does not name the different prisms and pyramids (such as a triangular prism); that comes in P2.
Key words
| Chinese | English |
|---|---|
| 立體圖形 | 3-D shape |
| 角柱 | prism |
| 圓柱 | cylinder |
| 角錐 | pyramid |
| 圓錐 | cone |
| 球 | sphere |
The 6 short lessons and the chapter test
Lessons are in Chinese for now.
- 角柱和圓柱
- 角錐和圓錐
- 五種立體圖形
- 生活中的立體圖形
- 找不同和數一數
- 重溫
- 章節測驗 (chapter test)
Sample questions (in Chinese)
Question 1這是甚麼立體圖形？
- 球
- 角錐
- 圓柱
- 圓錐
Answer and explanation
答案：C．圓柱
為甚麼？它上下兩個面是一樣大的圓形，四周是彎的，所以是圓柱。
Question 2下面哪一個是球？
Answer and explanation
答案：A
為甚麼？球的特點是整個都是彎的，沒有平的面。
Question 3「電池」的形狀像哪一種立體圖形？
- 圓錐
- 角柱
- 角錐
- 圓柱
Answer and explanation
答案：D．圓柱
為甚麼？電池的形狀上下兩個面是一樣大的圓形，四周是彎的，像圓柱。
Question 4哪一種立體圖形有這些特點？
沒有平的面，向哪個方向推都可以滾動。
- 角錐
- 球
- 圓錐
- 角柱
Answer and explanation
答案：B．球
為甚麼？球的特點是整個都是彎的，沒有平的面。
Based on learning unit 1S1 of the Education Bureau’s Primary Mathematics Curriculum (2017).