Monday, October 12, 2009
Wednesday, January 14, 2009
Today was teacher's day. One of my classes gave me a flower along with a picture of them lot. I almost cried of emotion.
Tuesday, January 13, 2009
'He looks so bored, writing books all day long!'
'But, but, but...he's old! And he has long hair!'
'Oooh, so that's Mr Rene. I wish he hadn't spent so much time thinking and writing. Then we wouldn't have to learn about coordinates!'
On a more serious note, we are soon going to move on to:
* Linear equations: introduction to algebra (grade 7)
* Linear equations II: y=mx+p and all you can derive from that ;) (grade 8)
* Angle properties of circles (grade 9)
If you have any experiences to share about these topics, feel free to comment. I am quite keen on improving my lessons.
Saturday, January 10, 2009
Since I always aspire to sprinkle sticky stars over their little heads, I am preparing such problems:
"In your drawer, there are 3 pairs of white socks, 5 pairs of blue socks and 1 pair of yellow socks. If you pick two socks out of the drawer (one after the other without replacing the first one), what is the probability of getting two matching socks?"
Enjoy your weekend, fellow maths heads :) Share the love!
Wednesday, January 7, 2009
Cheers for my little ones :)
Sunday, November 9, 2008
Also, any challenging problems are welcome, e-mail me your instructions! I am very fond of logical thinking that doesn't involve much calculations. The kids are always delighted to find the answer by looking at the problem from a different angle, drawing a picture or just arranging the data in a way that makes the questions simple.
In unrelated news, several students told me that I had lost weight. I wonder how it's even possible, given the quantities I've been eating over the past two weeks. Well, miracles are at your doorstep, as it were.
Wednesday, October 29, 2008
I don't know about you but I always thought that there's nothing like a good problem to hook you up to the matter. I selected this one for my grade seven monsters:
One night, Mint, Nett, Kate, Rakjang and Mai were having a sleep over at Mint’s place.
Mint couldn’t sleep so she went down to the kitchen, where she found a bowl full of mangoes. She ate 1/6 of the mangoes and went back to sleep.
Later that same night, Nett was hungry so she took 1/5 of the remaining mangoes.
Still later, Kate awoke, went down to the kitchen and ate 1/4 of the mangoes Nett had left.
Even later, Rakjang ate 1/3 of what was then left.
In the morning, Mai ate 1/2 of the remaining mangoes for breakfast, leaving only 3 mangoes for the dog.
How many mangoes were originally in the bowl?
And a little bit more challenging:
Three sailors were marooned on a deserted island that was also inhabited by a band of monkeys. The sailors worked all day to collect coconuts but they were too tired to count them so they agreed to divide them equally the next morning.
During the night, one sailor woke up and decided to get his share. He found that he could make three equal piles, with one coconut left over, which he threw to the monkeys. Thereupon, he had his own share and left the remainder in a single pile.
Later that night, the second sailor awoke and, likewise, decided to get his share of the coconuts. He also was able to make three equal piles, with one coconut left over, which he threw to the monkeys.
Somewhat later, the third sailor awoke and did exactly the same thing with the remaining coconuts.
In the morning, all three sailors noticed that the pile was considerably smaller but each thought that he knew why and said nothing. When they then divided the remaining coconuts equally, each sailor received seven and one was left over, which they threw to the monkeys.
How many coconuts were in the original pile?
I expect good cooperation work in this class, that may result in a variety of approaches.