

0310
Presentation
•
Mathematics
•
4th Grade
•
Practice Problem
•
Medium
黃嘉煒 老師 Wong Ka Wai
Used 2+ times
FREE Resource
5 Slides • 2 Questions
1
圖形的周界
正方形 & 長方形的周界
2
Multiple Choice
邊長 x 4 =
正方形的周界
長方形的周界
3
Multiple Choice
(長 + 闊) x 2 =
正方形的周界
長方形的周界
4
2人一組,討論一下問題:
正方形AB 的周界和長方形的周界相等?為什麼?(列式證明)
正方形 A
正方形 B
長方形 A
5
方法一:
方法二:
6
根據(長+闊)X 2,列式計算大長方形的周界:
7
8cm
15cm
比較兩個圖形的周界
圖形的周界
正方形 & 長方形的周界
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