Probability

As a math teacher, I think that what make this lesson successful it is because of the structure, resources and means putting together.In some school it is difficult or not easy to get access to these facilities and Teacher has to teach with the little ressource it has access.

iam maths teacher. ihope to be like him

The trick to the boxes problem (called The Monty Hall Problem in the States, after the name of a game show host) is that the host _always_ opens a box with brussel sprouts other than the one the contestant chose, and offers a switch.

But what if Monty Hall instead always opens one of the two remaining boxes at random, and then offers a switch only when the box he opens ends up having brussel sprouts? If this is how the game is played, then, when offered a chance to switch, it is equal probability to choose one box or the other.

That's the problem with this game as stated - we don't really know the rules.

It could be the case that Monty only offers a chance to change when it is wrong to change - the devilish Monty. Then the probability is 100% to stay with your first choice when offered a choice.

Or it could be that Monty only offers a chance to change if the contestant has chosen a box with brussel sprouts - the saintly Monty. Then the probability is 0% to stay with your first choice.

Without knowing Monty's rules for the game, we can't really talk about the probability. Because of this added complexity, I think it is wrong to use this example for kids.

If Monty _always_ opens a box other than the contestant's box showing brussel sprouts, and _always_ allows a switch to the third box, then the analysis in this video is correct.

Since students who tossed 'heads' stop tossing, his nice tree diagram is actually a misrepesentation of the sample space. It makes easier the explanation for why the odds of 7 heads in a row is 1/128, it is actually a kind of a cheat.

Just a great way to teach probability. I will certainly be showing this programme to my students and passing it on to my colleagues.
Can we have some more programmes from Jonny please?

This is an excellent programme. Full of fun and information with lots of ideas for "active maths" and suitable for many age groups and ability levels. The pupils enjoy this show a lot and I would rate it much higher than the algebra programme.

I've never underdstood probability but when i watched Mr heeleys programm i started to understand it and so did my mum (shocker!). Mr Heeley is a genius he's mr maths CUSHTIE sir!!!!!!!

You are great at matths and you are cushtie

MR HEELEY MAKES probability SO MUCH fun TO LEARN.
MATHS IS THE BEST AND MR HEELEY IS THE BEST MATHS TEACHER, HES SO FUNNY IN CLASS AND IS ALWAYS RAPPING.
CUSHTIE SIR

I'd heard rumours about what a good teacher Jonny is - but now I've seen it for myself I think he's absolutely amazing. What a brilliant and talented teacher. If all maths teachers were like this then every child could reach their full potential.
I wish he taught at my sons school.

AWARD WINNING GENIUS!!!!!!!!!

from Jonny's sister - and not at all biased :)

another great programme from a cushtie, jolly, enthusiatic, brilliant maths teacher. Hope there will be another programme because we just cant get enough off him lol.
bless him

p.s dont forget to ask the head for maths all day

LOL

p.p.s Heeley rules