Archive | October, 2012

A warm note from a cool parent who tells us to keep rocking…

25 Oct

This student has been taught by both Ms. Persis and then Mr. Bosco in Sec. 1.

 

 

Thank you parent. And yes, we will keep rocking! 🙂

A happy student who has enjoyed our Math Olympiad training in school programme

25 Oct

 

And she is asking for more! Wow!

 

 

Hi ZY, it’s so nice to hear from you though my lessons with your school has ended quite a while now. I hope you do your best and get into P5 Math Olympiad training. Perhaps I’ll see you again or another trainer will be there.
Ms. Phang

Question from Charles

25 Oct

Q.     Mrs Lim baked some tarts. She packed all the tarts in either small or big boxes. She packed 7 tarts in each small box and 10 tarts in each big box. At first, there were 4 times as many small boxes as the big boxes. After selling half of the number of small boxes of tarts and some big boxes of tarts, Mrs Lim gave her friends another 8 small boxes of tarts. The number of tarts in the unsold small boxes was thrice the number of tarts in the unsold big boxes. There were 280 tarts left in the big and small boxes. How many tarts did Mrs Lim bake at first?

Please click the following link for suggested solution: Question from Charles

Question from Pranathi

20 Oct

Q.     Peter spent all his money on 3 notebooks and 8 pens.  If he bought 1 pen and 4 notebooks, he would save 50 cents.  Each pen costs $2.50 less than each notebook.

(a)     Find the price of a pen.

(b)     Find the price of a notebook.

 

Please click the following link for suggested solution: Question from Pranathi

Question from Weekly Prized Science Hub Challenge (19 October)

19 Oct

Question from Weekly Prized Science Hub Challenge (19 October)

Closing Date: 31 October 2012

As a kitchen utensil specialist in IKEA, Lily intends to create a cooking pot which is able to cook food at a rapid rate. She then investigates two cooking pots

 made of the same material. She puts water and a piece of carrot into the pots, covers them with lids, and turns on the stove.

(a) Besides material of the cooking pots, which other variables should be kept constant to ensure the fairness of this experiment? Give 5 options.
(b) Based on your hypothesis, which carrot would be cooked at a faster rate? Explain why.
(c) However, after a while, Lily finds out that the carrots from both setups are still half-cooked. Besides increasing the hotness of stove, what can she do to increase the rate of cooking? Explain.

Photo: WEEKLY PRIZED SCIENCE HUB CHALLENGE 2012(Post your answer by 31 October 2012)As a kitchen utensil specialist in IKEA, Lily intends to create a cooking pot which is able to cook food at a rapid rate. She then investigates two cooking pots made of the same material. She puts water and a piece of carrot into the pots, covers them with lids, and turns on the stove.  (a) Besides material of the cooking pots, which other variables should be kept constant to ensure the fairness of this experiment? Give 5 options.(b) Based on your hypothesis, which carrot would be cooked at a faster rate? Explain why.(c) However, after a while, Lily finds out that the carrots from both setups are still half-cooked. Besides increasing the hotness of stove, what can she do to increase the rate of cooking? Explain.

Question for Thought

18 Oct

For students who are preparing for their year end math exam, here is a question to practise at your own time.

This question is pitched at Primary 5 level.

Q.  In a food stall, a hawker prepared packets of chicken rice and duck rice in the ratio of 11 : 6.  Every hour, 24 packets of duck rice and 42 packets of chicken rice were sold.  There were 28 packets of chicken rice left in the stall when all the packets of duck rice were sold.  How many more packets of chicken rice than packets of duck rice did the hawker prepare?

Please click the following link for suggested solution: PH5 18.10.12

Question from Meryl

15 Oct

Q.   At first, Jerry had $200 less than Ben. Then Ben gave Jerry 1/4 of his money. In return, Jerry gave Ben 1/5 of his money. Later, Ben gave 1/2 of his money to Jerry. In the end, Jerry had $700 more than Ben. How much did Jerry have at first?

Please click the following link for suggested solution: Question from Meryl