Mahani Matematik (d042707)
“The essence of mathematics is not to make simple things complicated, but to make complicated things simple.”
Monday, 14 November 2011
Monday, 7 November 2011
Aktiviti Matematik
Aktiviti Matematik : Pecahan Lipatan Kertas
Topik :
Pecahan
Apa yang diperlukan:
Kertas kosong A4
Apa yang perlu dilakukan:
Berikan setiap pelajar sehelai kertas. Minta pelajar lipat kertas itu mengikut pecahan yang diarahkan oleh guru.
Contoh :
Pelajar dapat memerhatikan bagaimana saiz berubah dengan setiap pecahan.
Sebagai alternatif, beri pelajar beberapa helai kertas pelbagai warna dan minta pelajar tuliskan pecahan itu di atas kertas.
Ini adalah satu aktiviti yang mudah dan murah untuk memperkenalkan pecahan. Ia juga boleh digunakan sebagai set induksi dan pelajar juga disarankan untuk membuat kaedah cubajaya.
Saturday, 29 October 2011
PERTUKARAN UNIT
MASA DAN WAKTU
1 HARI = 24 JAM
1 MINGGU = 7 HARI
1 BULAN = 28/29/30/31 HARI
1 TAHUN = 365/366 HARI
52 MINGGU
12 BULAN
1 DEKAD = 10 TAHUN
1 ABAD/KURUN = 100 TAHUN
10 DEKAD
10 ABAD
1 MINIT = 60 SAAT
1 JAM = 60 MINIT1 HARI = 24 JAM
1 MINGGU = 7 HARI
1 BULAN = 28/29/30/31 HARI
1 TAHUN = 365/366 HARI
52 MINGGU
12 BULAN
1 DEKAD = 10 TAHUN
1 ABAD/KURUN = 100 TAHUN
10 DEKAD
10 ABAD
Friday, 21 October 2011
Mari Belajar Nombor Bulat.
Whole Numbers (Nombor Bulat)
Whole Numbers are simply the numbers 0, 1, 2, 3, 4, 5, … (and so on)

No Fractions!
Counting Numbers
Counting Numbers are Whole Numbers, but without the zero. Because you can't "count" zero. So they are 1, 2, 3, 4, 5, … (and so on).
Natural Numbers
"Natural Numbers" can mean either "Counting Numbers" {1, 2, 3, ...}, or "Whole Numbers" {0, 1, 2, 3, ...}, depending on the subject.
Integers
Integers are like whole numbers, but they also include negative numbers ... but still no fractions allowed!

So, integers can be negative {-1, -2,-3, -4, -5, … }, positive {1, 2, 3, 4, 5, … }, or zero {0}
We can put that all together like this:
Integers = { ..., -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ... }
Confusing
Just to be confusing, some people say that whole numbers can also be negative, so that would make them exactly the same as integers. And sometimes people say that zero is NOT a whole number. So there you go, not everyone agrees on a simple thing!
My Standard
I must admit that sometimes I say "negative whole number", but usually I stick to:
Numbers | Name |
{ 0, 1, 2, 3, 4, 5, … } | Whole Numbers |
{ 1, 2, 3, 4, 5, … } | Counting Numbers |
{ ... -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, … } | Integers |
But nobody disagrees on the definition of an integer, so when in doubt say "integer", and if you only want positive integers, say "positive integers". It is not only accurate, it makes you sound intelligent. Like this (note: zero is neither positive nor negative):
- Integers = { ..., -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ... }
- Negative Integers = { ..., -5, -4, -3, -2, -1 }
- Positive Integers = { 1, 2, 3, 4, 5, ... }
- Non-Negative Integers = { 0, 1, 2, 3, 4, 5, ... } (includes zero, see?)
video:
Latihan:
NOMBOR-BULAT
Sunday, 16 October 2011
Saturday, 15 October 2011
Thursday, 13 October 2011
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