Class Video

 

Maths: What's Wrong?

Dear all,

Below are some common mistakes made by pupils for the topic, Time.

1) Are you able to spot them?
2) What are the correct answers?
3) Can you think of a way to prevent such mistakes?

Discuss in your small group and come out with a consolidated answer.


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Group 1 to 5:

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Index No. 6 to 10:

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All groups:

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Maths: Mock Test

Dear pupils,
 
Try your best to find the answers first. If you are unable to get the correct answer after several tries, look at the steps.
 
Do be careful in your calculations. Analyse the question first.
 
You can do it! :)

 

 

 

Science (Index No. 31 to 40): Ice Cubes

Jason observed that the ice cubes that he dropped into his drink disappeared after a while. His brother who was beside him told him that the ice cubes had lost heat and changed into a gas.

 

Do you think his brother was right? Why?

 

 

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Science (Index No. 21 to 30): Hot Towel

After a hot towel is wrapped over the bottom of the flask, bubbles could be seen coming out from the tube. Why?

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Science (Index No. 11 to 20) : Metal Bridge

The picture below shows a metal bridge. One end of the bridge is fixed while the other end is mounted on rollers. In which direction will the rollers move on a cool day? Why?

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Science (Index No. 1 to 10): How heat is transferred?

How is heat transferred when a kettle is used for boiling water? 

 

 

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Science: Mind Maps

Dear 4D,

 

 

Do take a look at the other groups' mind maps.

 

You are encouraged to give your comments.

 

Below are a couple of guiding questions to assist you in your comments.

 

 

1) What have you learnt from the below mind maps?

 

 

2) Are you able to spot any mistakes?

 

 

 

 

Index No. 1 to 4: 

 

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Index No. 5 to 8: 

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Index No. 9 to 12: 

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Index No. 13 to 16: 

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Index No. 17 to 20: 

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Index No. 21 to 24: 

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Index No. 25 to 28: 

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Index No. 29 to 32: 

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Index No. 33 to 36: 

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Index No. 37 to 40: 

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Science: Pie or Ice?

Tommy sticks his finger in a pie. It's so hot it makes him cry.
Tommy sticks his finger in some ice. It's so cold and oh, so nice.

Hot as pie or cold as ice.

Are you able to explain how heat flows in the above scenario?

(iScience Primary 3&4 textbook)

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Science: What are the effects of heat gain or heat loss?

Dear pupils,

As mentioned by most of you that there is a change in the volume of the matter (When the matter expands, its volume increases. When the matter contracts, its volume decreases.)
Beside this, there are 2 more changes.

Are you able to list them?? 
(Clue: Related to how hot or cold an object is.)
(Clue: What will happen to an ice cube when it gains heat?) 


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Chloe, Dominic, Nicholas, Kang Jie, Lester, Karthika and Reuben, 

The early birds! Well done! A little gift is waiting for you!

Most of you have listed that matter expands when it gains heat and contracts when it loses heat. 

In another words, there is a change in the volume of the matter. When the matter expands, its volume increases. When the matter contracts, its volume decreases.

Beside this, there are 2 more changes. Are you able to list them? 
(Clue: Related to how hot or cold an object is.)
(Clue: What will happen to an ice cube when it gains heat?) 

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Science: What do you think will happen to the cork after some time?

Tommy places an empty corked glass bottle (see picture on the right) into a basin of hot water.
What do you think will happen to the cork after some time and why?

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Sicence: Guiding Questions for your Mind Map

Online Stopwatch

http://www.online-stopwatch.com/

Random Name Selector

Maths: Unit 7 Activity 3

Karthika,

Superb work!

Maths: Unit 7 Activity 2

Amalia and Valeria,


Great job again!:)