James Kavanagh it’s great isn’t it! In the UK you’d get annihilated by Ofsted for not planning the timings of your lesson properly!

@@LottieBronte I'm pretty sure it's perfectly fine in the UK if it's voluntary of the students to stay

lunch is mandatory to go to, however, the whole school does not go to lunch at the same time. there are multiple lunch sessions and only certain classes/areas of the school go at a time. im not sure if this is how it works in other places of the world, but this is how it works in america, at least where i went. i dont think Mr Woo is asking the students if they need to go to lunch (they either have already went or are going to go), i think hes literally asking them if they have something to do.

@@ClassicMist360 thanks for the treatise on lunch and it's meaning to you, but I really do think he was saying "do you want to go to lunch" as in, right then, or did they wanna finish this concept... I think that because it's what he said. That was the focus of my comment, I admire that he engaged his students to the point they wanted to hear the ideas. The comments on lunch, or on local UK teaching regulators, are cool and all, but a bit off-topic.

@@jimmytumbles9640 if that was the focus of your comment you should have articulated it as such. you could have just as simply said "So kids, do you want leave or learn more maths?" without making an inaccurate statement. you think what you think because you interpreted what he said incorrectly. mr woo is a great teacher and i also greatly appreciate his desire to explain concepts and captivate students, but youre being a bit ridiculous. nobody is going to skip lunch and possibly starve themselves or not get to eat all their food to finish one math concept because he happens to be a good teacher. also you posted your comment on a public interface. you therefore accept that people will talk about almost anything that is protected under the laws of the land (wherever you may be in accordance with youtube's policies as well). you also dont need to be condescending or sarcastic. its unnecessary

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

@@aashutoshkashyap1886 I'm sure if Pythagoras had a KZfaq channel he'd say the same thing about both these creators.

@@adamonline45 ?

@@aashutoshkashyap1886 why should he, its knowledge sharing, not creation or anything, the Indian dont create these knowledge

@@aashutoshkashyap1886 The visual representation of an algebraic formula is not an invention by someone. It IS algebra. So Mr. Woo does not have to credit anyone.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

@@aashutoshkashyap1886 The visual representation of an algebraic formula is not an invention by someone. It IS algebra. So Mr. Woo does not have to credit anyone.

@@aashutoshkashyap1886 it’s not an invention lol anyone could have came up with this proof

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

@@aashutoshkashyap1886 this method of visualizing a^2 - b^2 has been around for a long, long time. Mathsmart did not invent this. In fact, I highly doubt this visualization can be appropriately attributed to one single person.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

@@aashutoshkashyap1886 dude everyone uses other people's results

Maybe mathssmart got it from someone else lol

​@@aashutoshkashyap1886knowledge increases by sharing.... It isnt called "stealing" ... Mathssmart GAVE it ... Noone stole it.... Or maybe mr. Eddie thought of this on his own... Or mathssmart was taught this by someone...

I think you're right

You are kind of right. But there is a point that this version in the video is alot more visual and requires less math knowledge. So, actually the lecturer’s way is simpler and easier to learn.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

@@aashutoshkashyap1886 The visual representation of an algebraic formula is not an invention by someone. It IS algebra. So Mr. Woo does not have to credit anyone.

visual proof is easier to understand than algebraic... It differs from ppl to ppl depending on their capacity to understand...and how they understand...

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

you used the statement at the beginning of your 'proof' you mong

That would be a big square plus a little square. There's no easy way of breaking up the big square, adding the small square, and rearranging to form a rectangle, which consistent with the fact that a²+b² can't be factored.

Now that i think about it... there's some interesting geometry we can do where the amount we need to add to the sides of the smaller square to make the total is exactly c-b, where c is the hypotenuse of a right triangle with sides a and b.

Look at the 1st/left-most diagram. Note a^2+b^2 = (a^2+2ab+b^2)-2ab = (a+b)^2-2ab. This is interpreted geometrically as the area of the encompassing square, where each side = (a+b), thus has area = (a+b)(a+b) = (a+b)^2. Now, remove/subtract the 2 rectangles, each of area = ab and you will be left with the major square which has area = a^2 and the minor square which has area = b^2, thus summing to area = a^2+b^2. Hope this is clear.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

@@aashutoshkashyap1886 Geometry has been around for a lot longer than 3 years. I'm not sure if your reply is meant to be serious.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

@@aashutoshkashyap1886 I believe it is an extremely well known visual representation invented by neither nr woo nor mathssmart

@@AndewMole invented or discovered? Also I believe mathssmart was the one to discover (of course the first one to reveal something is the one to discover it)

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.

Don't take me wrong. But i think visual representation of (a-b)² and a²- b² was already uploaded by an Indian KZfaqr mathssmart 3 years earlier than his video and their method representation are quite similar. I think Mr woo is using that method of representation without even crediting the KZfaq channel.