Visual Proof for Difference of Squares a²-b²

[jimmytumbles]

0:36

So kids, do you want to have lunch or more maths? *everyone stays planted in seats*


You're a very very special talent Mr Woo, thanks so much for these videos.

[adamonline]

I have used these formulas, but I don't think I was ever shown what they meant like this. Man, I am not good at remembering formulas, but with a little thinking, I will never forget these now. Thank you for putting all your videos up! I'm not a teacher, but you make me want to be a good one!

[ConTejasMusic]

Youtube should have 'love' buttons, especially for videos like yours <3
I graduated high school last November, but I still watch your videos because I learn something new everyday :)

[mistressmarauder]

Always inspiring me to be a better maths teacher. Thanks for sharing this!

[LottieBronte]

I love Eddie Woo because he teaches like my father taught me and how I try to teach maths. I always wanted to know WHY... no maths teachers could be bothered (or were able) to answer, except for my Dad, but he wasn’t home much because of work. Taught myself a great deal from a book as a result. No wootube or youtube in 1977!! I feel like I’m discovering maths properly at last and I’m in my 50s. Thanks Mr Woo! 💜

[raichuk]

I just wanna say, I already have my bachelor's degree in applied math yet I still learned multiple new things from this lol

[unknownbeing]

Taking alg 2 and geometry this year and this answered my long confusion of how (a-b)^2 could become that long weird formula. Just accepted it because it could get me back to where it started. Seeing the process of how it could be is great. Things they should teach in school

[ArnabAnimeshDas]

I was thinking of another way.
(a-b)(a+b) = (a-b)a+(a-b)b = (the upper big rectangle + the lower small rectangle) of the paper
I feel like it would be easier to understand and there would be no need to cut the paper.

[twhartonable]

This teacher is amazing. I wish I had been taught like this -- I've never been able to visualize math before this!

[wayneyadams]

Very nice way to illustrate the equations. We need more math teachers like him.

[KritarthaSharma]

tysmm, i've learnt these before but never thought about the visual proof

[oenrn]

You know you're dealing with an awesome teacher when the bell rings, the teacher says "feel free to leave if you wish", and the students choose to stay.

[xeno]

He is surely the best teacher i have ever seen.

[nickwood]

I'm an increaingly old man trying to make up for a misspent adolesence. Huge thanks for the opportunity to attend maths class again... I'm paying attention this time.

[vinceallenmeneses]

youre the perfect teacher sir that any sincere students would like. 😉

[morningtarr]

Hi I have this problem,
I want to find a²+b²
Where a is bigger and b is small square,
So when i try to find their area and sum them up i don't get the result same as the formula of a²+b².

[lakshyashakya]

Awesome video sir. .I just love mathematics and the way you teach it's awesome....huge respect sir

[KategariYami]

Ta-da
Damn. So that's how that works. I knew it works but I never thought about how it happens.

I thought you would have said that it was something like a - b + b + b = a + b but the way you showed it is far less confusing.

[AKASHYADAV-cxvx]

i still remember how tuff it was when Teacher used to make sit even after the class gets over ..eddi 🤟

[rosesarelike]

wow I never thought about it like this, but it makes so much sense!