Q&A - PSLE Math

[tweet]

ApronMama:

tweet:

[quote=\"tianzhu\"]The Singapore Model Method for Learning Mathematics


I stumbled into this book while browsing in Popular bookstore. It is very readable with colourful models and has about 135 pages. It is published by EPB Panpac Education. It offers a comprehensive overview of the Model Method. However, its price of $32 (if I remember it correctly) is steep as compared to the usual guide/assessment books. But if you have a child, let us in P3, you still have about 4 years to go, so 32/4 which is $8/year, this book is certainly a good buy.

Tianzhu, thanks for the recommendation, will drop by popular.I enquired about maths teach products, using 5 colors to solve maths, very interesting.Price a bit steep though. Each book cost $30.(Individual books on fractions, % & ratio etc).

Hi Tweet, recently I observe from my children's maths worksheet and find that teachers don't seem to be greatly emphaise on using model like last time. They use comparison as far as it is possible. Does that happen to your kids school?[/quote]Hi Apronmama

spoke to maths HOD, the teachers dont deduct marks for not drawing models to solve.As long as the children can work out step by step solutions, it is acceptable.Can broswe http://www.mathteach.com, very precise & easy to grasp models, recommend by one KSP parent.

[Emelyn]

Hi,


Need some help here.
Stumbled by DS1 math questions… i spent 30mins. still cannot solve.

Ali, Billy and Caven had some cards. Ali would have twice as many cards as Billy if Billy gave 28 cards to Ali. Both Billy and Caven would have the same number of cards if Caven gave 84 cards to BIlly. Given that Caven had 112 more cards than Ali at the beginning, find the number of cards each of them had at the beginning.

Thanks in advance.

[tianzhu]

Hi

Hope this helps.

http://farm4.static.flickr.com/3378/3345505267_1677a83c17_o.jpg\">

[Emelyn]

tianzhu,


Thanks !!

i was trying to draw 2 different models and then after that, didn’t know how to proceed !

Just to clarify, in this question, the 2 scenarios do not happen together, right ? That is, scenario A is Billy give Ali, and Scenario B is caven give billy.

[tianzhu]

Emelyn:

tianzhu,


Thanks !!

i was trying to draw 2 different models and then after that, didn't know how to proceed !

Just to clarify, in this question, the 2 scenarios do not happen together, right ? That is, scenario A is Billy give Ali, and Scenario B is caven give billy.

Hi Emelyn

Is your question from P6?Where is this question from?
Not to worry,I also had a few hard knocks before arriving at the solution.Your strategy is right.
Not an easy problem for a kid during trying examination condition.

[Emelyn]

It’s from DS1’s Maths enrichment class.

Actually I am not sure whether it is a P6 question or not.
DS1 is only P4.

[Emelyn]

Tianzhu,


I took another look at your solution.

Why do Ali and Billy have the same number of cards ?
It is not mentioned in the question.

[tianzhu]

Emelyn:

Tianzhu,


I took another look at your solution.

Why do Ali and Billy have the same number of cards ?
It is not mentioned in the question.

Hi Emelyn

No, Ali had 196, and Billy had 140.They do not have the same number of cards.

If Billy had given 28 cards to Ali,he would have 112 and Ali's new number of cards would be 224, which was twice as many.

The second scenario, Billy and Caven would have 224 cards each if the exchanges had taken place.

Are my answers same as those given in your DS's worksheet?If you play around with the numbers, they look logical.

[Emelyn]

I mean in the model, you drew Ali and Billy having the same number of cards.


I don't understand why.

Maybe I am really slow..... :?

[caroline3sg]

Emelyn

Ali & Billy is not having the same. On top, there is arrow showing Ali 360 and below arrow showing Billy 240.

The orange shaded part being the same is they sold the same number of cards.