Fredrick shared with all a lesson on Probability with the use of poker cards which was inspired by the movie "21' that he had watched. Interesting lesson which captivated the interest of his pupils but as an educator he still need to be cautious not to promote gambling in his class so as not to arouse the dissatisfaction of parents. That's the life of a teacher, to inculcate not only knowledge and skills but values too.
The sharing also raised a probability problem. The problem is a game that requires one to guess which door out of three (say A, B & C) that has for example the car behind it while behind the other two are only goats. When the participant guess one door, say A, the tester will open one other door, say B, which has a goat, and ask the participant if he/she wishes to change his/her mind on his/her choice to door C. The probability of switching the choice and winning the game becomes higher. In fact, in this case, probability of door C having the car becomes 2/3 and not 1/3 anymore. Hence, teachers had a small discussion on why it is so but most were still not convinced with the explanation for the 2/3 probabiliy of changing choice that one of us came up with. But it sets most of us thinking through all the possible explanations that we can have.
It was indeed a good sharing for the day! I will try to get teachers to share their innovative ideas during Staff time more often :)
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I thought when the door with the goat is opened and the game participant chooses another time, the probability is reset giving him 1 out of 2 chances of getting the car?
Any interesting game or method used in teaching will engage the attention of pupils and the further steps are to ensure there is understanding. Checking seat work, presentation, peer checking, are but some methods to check understanding after all the excitement is over.
Similarly, sharing during staff time canseem interesting, there must be dilebrate attempts to check for understanding and application.
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