Length and distance (I)
Comparing two objects directly to see which is longer or taller, with one end lined up; measuring and comparing lengths with improvised units such as paper clips, and seeing why the same unit must be used; comparing which place is nearer and what the distance between two points means.
Key words
| Chinese | English |
|---|---|
| 長 | long |
| 短 | short |
| 高 | tall |
| 矮 | short (in height) |
| 遠 | far |
| 近 | near |
| 距離 | distance |
The 4 short lessons and the chapter test
Lessons are in Chinese for now.
- 長和短
- 高和矮
- 用自訂單位量度
- 遠近和距離
- 章節測驗 (chapter test)
Sample questions (in Chinese)
Question 1哪一條絲帶比較短？
- 甲
- 乙
Answer and explanation
答案：A．甲
為甚麼？兩條絲帶的左端已經對齊，看右端：甲的右端較早完結，所以甲比較短。
Question 2要比較兩枝鉛筆的長短，哪一個放法正確？
Answer and explanation
答案：B
為甚麼？比較長短時，要先把兩件物件的一端對齊，再看另一端，哪一件伸得較遠就比較長。
Question 3這枝鉛筆大約有多少粒積木那麼長？
大約 粒積木那麼長。
Answer and explanation
答案：大約 9 粒積木那麼長。
為甚麼？鉛筆的一端對齊第一粒積木，另一端到第 9 粒的末端。數一數，大約是 9 粒積木那麼長。
Question 4用同一種萬字夾量度：黃色絲帶長 14 個萬字夾，紅色絲帶長 12 個萬字夾。哪一條比較短？
- 紅色絲帶
- 黃色絲帶
Answer and explanation
答案：A．紅色絲帶
為甚麼？用同一種單位量度，數目較多的比較長，數目較少的比較短。所以紅色絲帶比較短。
Based on learning unit 1M1 of the Education Bureau’s Primary Mathematics Curriculum (2017).