Friday 9 December 2011

Activity: Compare Lengths


baiklah. mari kita cuba beberapa aktiviti untuk mengukur perbezaan panjang. 
Measure lengths in different ways.

How Will We Measure?

We will use these items to do the measurements:
Paperclips
Your hand
A small piece of string
Your steps

Gather Items to Measure

We want some things to measure! Gather up these items:
  • 2 Different sized books
  • pencil
  • plate
  • bag
Put them all on a Table, which you can also measure!
Also measure the height of a chair.
And the width and length of the Room you are in.

How To Measure


This book is 5 paperclips wide


If you don't have enough paperclips, then pick up
the ones you started with and use them again


Using Paperclips

For each item:
  • First guess how many Paperclips the length is
  • Then measure it using the Paperclips
ItemGuessActual
Example: Book34
Small Book  
Large Book  
Plate  
Bag  
Chair (height)  
Table (width)  
Table (length)  

Using Your Hands:

First guess how many "hands" are needed, then do the actual measurement:
ItemGuessActual
Small Book  
Large Book  
Plate  
Bag  
Chair (height)  
Table (width)  
Table (length)  

Using String:

First guess how many lengths of your string are needed, then do the actual measurement:
ItemGuessActual
Chair (height)  
Table (width)  
Table (length)  
Room (width)  
Room (length)  

Using Your Steps:

Now step out these distances:
ItemGuessActual
Chair (height)  
Table (width)  
Table (length)  
Room (width)  
Room (length)  

From Smallest to Largest

Lastly, list all the items you measured, from the smallest to largest distance.
Example: Spoon, Pencil, Fork, ...
 

Metric System of Measurement

The metric system is a system of measuring. It has three basic units:

m the meter for length
kg the kilogram for mass
s the second for time
With those three simple measurements
we can measure nearly everything in the world!

Examples:

Meter (Metre in UK)

The length of this guitar
is about 1 meter:
1 meter
 When unfolded this ruler
measures 2 meters:
ruler
   

Kilogram

1 kilogram
This gold bar has a
mass of 1 kilogram.


Dictionary
A dictionary has a
mass of about 1 kilogram.

Second

1 second is about as long as it takes to say "one thousand and one"

Larger or Smaller

But what if we want to talk about really big or really small things?
we learn about it in the next chapter.
see you guys :)

Ukuran

1. CECAIR

orange juice  mililiter/ liter

1 liter = 1,000 milliliter

2. BERAT

grams
paperclip
*berat klip kertas diatas bersamaan dengan 100gram

kilogram

Dictionary

* berat Kamus diatas bersamaan dengan 2 kilogram

1 kilogram = 1,000 gram

tan

car

berat kereta diatas bersamaan dengan 3 tan.

1 tan = 1,000 kilogram

Activity: Counting Coins


Collecting and counting money!
Step 1: Collect all the coins in the house! (I am sure your family won't mind when you tell them it is so you can learn mathematics.)
Step 2: Sort them into groups (5c in one group, 10c in another, etc)
Step 3: Count how many in each group, then calculate the group value.
Example: You count your 5c coins, and find you have 15 of them.
15 x 5c = 75c
You can use this form:
CoinHow ManyValue
   
   
   
   
   
   
   
Total Value:
 
Step 4: Add up all the group totals so you know how much money you have!
Tell everyone what a good job you did ...
... and ask if you can keep the money!

Tip: If you make stacks of coins exactly 10 high it is easier to calculate the totals.

keajaiban Matematik


matematik itu menabjukkan.
jom lihat video dibawah!


sekian :)

Wednesday 2 November 2011

Kenapa kita perlu ajar murid tentang abakus?

Kepada kawan- kawan semua, mengajar abakus tidaklah susah sangat. banyak kelebihan yang boleh didapati apablia murid menguasai abakus. Sekarang kita digalakkan menggunakan abakus 1:4.

Apakah itu abakus?




Abakus digunakan untuk membantu mereka menguasai empat operasi asas  iaitu tambah, tolak, darab dan bahagi. Abakus biasanya dikenali sebagai sempoa dalam kalangan orang melayu dan  “suan-pan” dalam masyarakat cina. Abakus ialah perkataan Latin yang berasal dari perkataan Greek  abax atau abako (bermaksud “jadual” atau “kepingan”). Kemungkinan juga abakus berasal dari perkataan abq atau abak, yang bermaksud “pasir”


Kenapa abakus  wujud?

Abakus ialah satu bahan bantuan mekanikal yang digunakan untuk membilang. Ia bukanlah  kalkulator sebagaimana yang anda gunakan sekarang. Orang yang menggunakan abakus biasanya melakukan pengiraan mental dan abakus  berungsi untuk menyimpan hasiltambah, mengumpul semula dan sebagainya. Perkembangan peranti daripada keperluan  Abakus wujud untuk memenuhi keperluan untuk mengira. Peniaga bukan sahaja memerlukan cara untuk membilang barangan yang dibeli dan dijjual tetapi juga untuk mengira kos barangannya. Abakus digunakan untuk menjadikan pengiraan harian lebih mudah sehinggalah nombor dicipta.


 




abakus bagus untuk belajar mengira.

Abacus and mental arithmetic means using the abacus for the teaching of mental arithmetic. Abacus is the tool used for the calculation of (+) plus, (-) minus, (*) multiplication and (/) division. When on uses an abacus, one has to follow certain rules and methods. When a person is familiar and skilful in the use of abacus, he will be able to calculate faster, Through feeling, perception and memory, one's brain will be train to work like the abacus and that is what its mean by abacus and mental arithmetic way of calculating.
Abacus and mental arithmetic method is the world's best method of learning calculating skill. Once you are good at the abacus and mental arithmetic way of calculating, you can calculate faster than an electronic calculator!