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Thursday, 29 November 2012

Perfect Perfect VISION




Using four straight 
lines, divide this 
square into nine 
pieces, so that 
each piece total 
the same number.








Sunday, 11 November 2012

Thinking carefully ~

One day, Mary's father gave her 10 stalks of flowers and asked her to arrange all these flowers in 5 straight lines. Each line must have 4 stalks of flowers. How does Mary arrange these flowers ?


 Oops ! This student was    gave the wrong answer !

 Aiya, this student also work out the wrong answer !

After discussion, still cannot get the answer. Then, they came and asked :" Teacher, 5 straight lines X 4 stalks of flowers = 20 stalks of flowers , not 10 stalks of flowers."
But teacher said there are 10 stalks of flowers only.
Oh, my god ! What should Mary done to get the answer ??? 


 Let us see this student, she find the answer...


hahaha, this is the answer :

10 stalks of flowers arrange in 5 straight lines, so each line will have 4 stalks of flowers !



Saturday, 10 November 2012

Thinking skill



 Pupils were trying to find out the answer.


       










Finally, the answer was came out, hahaha...
         

Saturday, 3 November 2012

Lesson Plan (Mass)



Lesson   plan

Subject                        :     Mathematics

Year                             :      3

Topic                            :     Mass

Duration/Time             :     60 minutes

Subject Content          :   Kilogram is a standard unit used to weigh heavy objects, and gram is a standard unit used to weigh light objects.

Learning Outcomes    :   At the end of the lesson the pupils will be able to:
1. Read scales to the nearest division.
2. Measure and record masses of objects using the standard units.

Moral Values               :     Being Cooperative and helpful

Thinking Skills            :     Comparing and reasoning.

Teaching Aids             :    Books, Salt, Sugar, Apple, Marbles weighing instrument, chalks.


Step/Time

Skill/Content

Teaching and Learning Activities

Remark/Resources

Set induction
( 5 minutes )

To arouse interest

1.        Teacher shows slides of various types of weighing instruments.
2.        Teacher talks about the weighing instruments used from the olden days till modern times.

Power Point 1

Step 1
(15 minutes)

To introduce the concept of weight

1.      Teacher introduces the concept of weight by comparing two objects; marble and chalk.
2.      Students try to guess which object is heavier.
3.      Teacher puts the two objects onto the equal arm balance.
4.      Students now can see which is heavier and make this conclusion:
      “The marble is heavier than a piece of     
       chalk.”

Equal arm balance,
Marble, Chalk


Step 2
(15 minutes)

To introduce the symbol “kg” and “g” and to read scales to the nearest division

1.      Teacher introduces the symbols for kilograms and grams.
2.      Teacher guides students to read the weighing scales to the nearest division.
3.      Teacher distributes worksheets and students write down the masses of the objects.
4.      Teacher checks answers with the students.

Power Point 2
Worksheet 1

Step 3
(20 minutes)

To measure masses of objects and to record them in kilograms and grams

1.      Teacher divides class into 3 groups.
2.      The group leader will collect all the objects and weighing scale.
3.      Students measure the mass of the various objects and record them in the table provided. 

Items
Mass
Salt

Sugar

Apple

Book

5 marbles


4.      Teacher goes around checking that the students are weighing and reading the scales correctly.

Weighing scale
Salt, Sugar, Apple,
Book, Marbles

Closure
(5 minutes)

Game – “Show The Mass.”

1.      Students remain in the same group for the game.
2.      Teacher distributes picture cards and the face of the weighing scales.
3.      Students take turns to read the mass of the objects and turn the pointer to show the correct mass.

Picture cards.
Cut-out face of sc

数字的由来