香港中文大學 教育學院 大學與學校 夥伴協作中心「促進實踐社群...
TRANSCRIPT
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(17-18)
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TSALCMHCF
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4A
31
1/3
2 1 1
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:
()
()
() ()
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()
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: ()
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()
3 2 = 6 6 1 = 6
2 3 = 6 6 1 = 6 3 2 = 6 1 6 = 6
1)1
2)
23
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()
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()
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()
4
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()
1. (10)
2. (10)
3. (2436)(10) /
4. (3060)(10) /
/
5. (10)
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()
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(3)
1.
2 4 ________________________________________
3 6 ________________________________________
1, 2, 3, 4, 6, 8, 12, 24
1, 2, 3, 4, 6, 9, 12, 18, 36
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(3)
1.
3 0________________________________________
6 0 ________________________________________
1, 2, 3, 5, 6, 10, 15, 30
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
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(3)
1.
3 2 ________________________________________
4 8 ________________________________________
1, 2, 4, 8, 16, 32
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
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3 6
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3 6
3 6
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24 36
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2 4 3 6
3 6
1 2 3 4 6
8 12 24
2
1 2 3 4 6
9 12 18 36
3 6
?
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24 36 (2436)
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2 4 3 6
2 3 6
1 2 3 4 6
8 12 24
1 2 3 4 6
9 12 18 36
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3
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12
12
12
1 2 ??
1
1
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12
(H.C.F.)
30
16
?
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(1)
1
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(2)
(H.C.F.)
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()
()
https://youtu.be/foP-aWUzRVA
https://youtu.be/foP-aWUzRVAhttps://youtu.be/foP-aWUzRVAhttps://youtu.be/foP-aWUzRVA -
()()
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()()
: 2 x 3 = 6
= 6
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:
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()
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()
()()