2-D shapes
Telling straight lines from curves, and points from lines; triangles, quadrilaterals, pentagons, hexagons and circles, and counting their sides; seeing that a shape turned round is still the same shape; and making new shapes from smaller ones.
Key words
| Chinese | English |
|---|---|
| 直線 | straight line |
| 曲線 | curve |
| 三角形 | triangle |
| 四邊形 | quadrilateral |
| 五邊形 | pentagon |
| 六邊形 | hexagon |
| 圓形 | circle |
| 邊 | side |
The 10 short lessons and the chapter test
Lessons are in Chinese for now.
- 直線和曲線
- 點和線
- 數直線和曲線
- 數邊
- 三角形和四邊形
- 五邊形、六邊形和圓形
- 轉了方向的圖形
- 找一找
- 拼砌圖形
- 重溫
- 章節測驗 (chapter test)
Sample questions (in Chinese)
Question 1下面哪一條是直線?
Answer and explanation
答案:C
為甚麼?直線是直直的,沒有彎曲;曲線是彎的。
Question 2這句話對還是錯?
曲線是彎的。
- 對
- 錯
Answer and explanation
答案:A.對
為甚麼?曲線是彎的;直線是直的。
Question 3這是甚麼圖形?
- 三角形
- 四邊形
- 六邊形
- 五邊形
Answer and explanation
答案:A.三角形
為甚麼?數一數,它有 3 條直的邊,所以是三角形。轉了方向也一樣。
Question 4下面哪一個是三角形?
Answer and explanation
答案:C
為甚麼?三角形有 3 條直的邊。
Based on learning unit 1S2 of the Education Bureau’s Primary Mathematics Curriculum (2017).