This is rare: encouraging children to play computer games but if they promote education, why not?!
Comment on Maths made fun for GCSE School kids! by bhups101
Comment on A unique technique to teach geometry by clayturn
That’s quite amusing, I’d quite like to sit a couple of her lectures now and see some of her pieces! I’ve allways found that the use of examples makes a topic easier to understand, and by the looks of things hers are very well made and presentable. I bet they work really well.
Comment on Children cocaine addicts! by dy14n
Very interesting article, very shocking also.
I am quite intrigued at why so many underaged were checked fore cocaine.
Thanks for bringing this article to our attention
Comment on A unique technique to teach geometry by katierosew
My Geometry and Visualisation lecturer (Katrin Leschke) said we could use knitting to show curves etc on 3d shapes … now I understand a bit better why she said this as I didn’t have time to explore!!
Comment on Makers Faire Video by clayturn
That isn’t anywhere near how I imagined the faire to be, looked really fun! I hope you had a go at confusing the Rubiks Cube robot!
Comment on Maths Joke by dy14n
Very amusing. (I’m trying to avoid the use of LOL or LMAO)
Comment on Is math pointless? by gelada
This is a nice example. It is an excellent exercise to find the step where things break.
Comment on Is math pointless? by katierosew
if a = b then in step 2 you are multipling by zero… but I can see how this looks true that a = b.
Look at this example whereby somebody tries to prove 2=1 in a similar fashion:
How would you prove that 2 = 1?
If a = b (so I say) [a = b]
And we multiply both sides by a
Then we’ll see that a2 [a2 = ab]
When with ab compared
Are the same. Remove b2. OK? [a2− b2 = ab − b2]
Both sides we will factorize. See?
Now each side contains a − b. [(a+b)(a − b) = b(a − b)]
We’ll divide through by a
Minus b and olé
a + b = b. Oh whoopee! [a + b = b]
But since I said a = b
b + b = b you’ll agree? [b + b = b]
So if b = 1
Then this sum I have done [1 + 1 = 1]
Proves that 2 = 1. Q.E.D.
Written by PeterW
(Just in case you’re wondering – the above proof is incorrect because in step 5, we divided by (a – b) which is 0 since a = b)
a2, b2 means a squared, b squared just to clarify
[http://www.onlinemathlearning.com/algebra-math-riddles.html]
So it is kinda like this but backwards
Comment on Is math pointless? by Daniel
In this ‘proof’ the mistake is made when they have (a – t/2)^2 = (b – t/2)^2 and then take the liberty of ignoring the signs, and simply rooting.
For example, sure, it could be that in some cases a-(t/2) = b-(t/2) => a=b, which means that a-b=0, so we multiplied by 0 to begin with.
The other option is that a-(t/2)=-(b-(t/2)) => a-(t/2)=(t/2)-b => a+b=t, as we’d expect. (There are two more, but they’re just negative versions of the two cases that I stated, so the result is the same).
It’s clever, though.
Comment on Maths Joke by Alana
This is brilliant and so true. I will share it with my Mathematician colleagues…I must.
Thanks for that!