Yay! My maths microteaching is finally over. I thought I was the 3rd one to present. Turned out that I was the 4th one. Strangely I did not feel nervous at all. But I spoke really fast (I did not even realize till Dr. Tay pointed out. ‘Bad’ influence from my sis…. Ha ha.. find someone to blame) Anyway the funny thing was that I was hoping to quickly present and get it over and done with. But then dunno wadz wrong with Dr. Tay. Probably because he had a lot of time to spare. Cos he did not comment much on Steven at all. Not sure if it is because of the age so he did not want to embarrass him or wad. Anyway shan’t comment much. Ya what happened wad that after he finished commenting on Chi Wai’s presentation, I thought it was my turn. But then he still wanna crack what stupidn joke. So irritating. I was not in the mood to hear his joke lor. Dunno wad TJ, HCJC and VJC competition joke. According to him, VJ and TJ competition very keen. He taught in TJ.
Anyway finally my turn. Time passed very quickly. I did not even have time to finish what I have prepared. Haha. Anyway… I added some parts. Some questioning on the whiteboard. Can k=0? Is x directly proportional to y etc? He feels that I shld go slower for this part. Slowly tune the class to the mathematical mode of k and equations etc. Plus the class is sec 2 of average ability so may not be able to handle. Maybe ask in the later part of the question. Plus some egs and non- examples to test understanding. So Dr Tay asked me abt it why not in the lesson plan. And he said I spoke faster and faster and asked if I was nervous. I said no. Cos of time constraints. Anyway he did not like all my examples. But come to think of it, it is quite true la. For the overdue book, towards a certain stage, why wld pple be so stupid to pay the large fine accumulated? Just pay for the cost of the book lor. The daily examples of the oranges mentioned by Chi Wai too. Bargaining etc. And then the petrol vs distance traveled given by dunno who.. dunno wad is his name… a lot of factors to be considered…ha ha I did not even noe how to handle and I knew Dr. Tay gonna comment on that.O yes Dr. Tay also mentioned that the double, triple and half etc for overdue book is quite obvious. No need spend so much time.
O yes I want to talk abt Shuwen’s lesson on mean and median. I thought it was not bad. The idea of using post it to collect raw data on the number of hours student spend on computer. Students divided into groups of 3-4. Each person supposed to write the number of hours spend on the post it. Then stick on the board. Then problem comes in. Cos so many post it. How to determine which group spend more time etc. if students say sum then say some grps 3 some groups 4 pple. Not v fair. Most prob students will say take average. Then we can now bring in the concept of mean. Explain that in statistics the average is called the mean. Then slowly show formula on the board. Then model one example. Ask students to do the average for the rest. Next bring in the idea of median by saying I add in 24 hours. Then ask student to calculate the average. (24+1+2)/3 = 9 . Wah now the mean becomes so bind. According to sch regulations, more than 6 hours on com have to send for counseling. So whole group has to go counseling. Then the group will protest cos of one person unfair! So now we introduce the median. Arrange the data from smallest to biggest then take the centre value. Measures of central tendency!
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