Imagine being such a good teacher that your students literally gasp and shout out in excitement at the insight you gift to them. Talk about inspiring. Mr Woo is a legend.

The moment a concept clicks in mathematics, is pure bliss.

the students are so excited to have it click. awesome.

absolutely blew my mind, great explanation. I feel that understanding the logic behind what I'm learning really helps me grasp the concept, instead of just memorising rules

The amount of sheer glee Eddie Woo derives by just showing them these concepts is infectious. It's incredible how much he loves the subject, and even more so that he can communicate and share where that love comes from with his students.

So, "completing the square" is about literally completing the square. I have never seen such an explanation ! Mind blown !

I'm 32 years old, and this is the first time I've ever seen the completing the square rule being shown geometrically! I learnt the rule in school and understood it in terms of the coordinates of the turning point of the parabola on a Cartesian plane. My mind was as blown as those kids in your class when I saw the rule visually represented!

Just two words........ Absolutely brilliant!

This makes so much sense and it is so awesome. I wish I could just watch KZfaq videos all day to learn instead of going to college

I have gone my whole life hearing the expression 'completing the square', and never knew what it was about. What lousy maths teachers I had!

Absolutely blew my mind! This is why I love math so much. A lot of people hate it because they think it's all just about numbers, but when you put tangible context to it, it becomes something entirely different and meaningful.

That's why we start by teaching multiplication of two binomials with algebra tiles and the box method. It's so beautiful to see the conceptual diagram continues to work. But to hear this group get so excited about seeing the "why" behind the algorithm they know is awesome!

This is absolutely brilliant for visual learners ! Thank you so much....this is fabulous for helping my son to understand. You are awesome.

You are the most insightful teacher I have ever had the pleasure to watch. I have even caught myself watching you teach subject matter I thought I already knew, mostly because your approach is so uniquely eye-opening (and entertaining). And then BAMM! You hit me with an idea I never saw coming...like you did in this video (eg, completing the squares). I'm all smiles. Thanks.

Great video! Are these high school students? They seem very enthusiastic, excited, and engaged in learning math. I wish my community college students would get this excited about learning math…

You sir is the best teacher ever.. the students should consider themselves really really lucky to have a teacher like you

Omg that MathGasm I had was the most mind blowing one I've ever had :D

and majority of students are in debt while never even knowing these type of beauty in math. really sad!

I love the energy and enthusiasm with which concepts are made clear!

THIS is tge teacher i aspire to be if i ever really become one. Energetic, passionate, logical, and names my students gasp in excitement!! Im in grade 11 and my class is so dead. They hate math but next year, its not compulsory to take it so hopefully my class is a lot more happy and willing to learn. Its hard to feel motivated when the people around you hate that room so much

MINDBLOWN!!! I was literally screaming with the students as if I was in the class. Thanks for the explanation.🙌👍

I love your charisma and expertise. I'm showing this video to my students since this made me get so excited about solving quadratic equations by completing the square.

What a great Match Teacher, this is so enlightening.

Bloody brilliant!! What a fabulous and inspiring teacher!👏🏻👏🏻👏🏻

The best video and representation of the applied information I have seen on the subject. You have blessed me today, thank you Mr. Woo.

This is a beautiful representation of completing the square. Thanks man, now I can’t forget how the process

THIS MAKES SO MUCH MORE SENSE THANK YOU EDDIE

Brilliant! Love the enthusiasm as well 😊

the reactions of your students are so wholesome ❤

Simply the best..thank you!!

It's trivial math, but I LOVE your method of teaching! You're awesome ;) ;) I wish I had this kind of teacher at my school :-(

it all suddenly made sense! thank you!!!

The sound of students getting it is the most rewarding feeling ever.

Awesome! Thank you!

Love the reactions!!

Wow, that's what I am exactly looking for. the practical meaning of "completing the square". Thank you.

Wow, U are a very enthusiastic teacher. God bless Sir.

Great video Eddie. This is from al-Khwarizmi, circa 820 AD. If he had understood Brahmagupta as well as Euclid he could have solved this problem with a circle to solve for both positive and negative solutions.

2:08 The beautiful lightbulb moment that every teacher loves to experience!

One of the finest teachers in the world!

I wish you were my teacher. No one make us learn this way or explained this way. When i see your videos, i feel my maths teachers were seriously dumb.

Oh man ! You rocked.

Pure genius, man. May need to find another word to describe you soon.

Just amazing. Thank you. 20years after failing my GCSE math I'm retaking.

Very nice. I will use that with my students this term when solving quadratic equations. Thanks.

Really impressive sir....I wish if every maths teacher could teach like you...

WOW !!!! I'm going to point my daughter to your lessons !!!!

If only I could get my students to get excited about learning like you have here.

I will never forget this video! (:

Pure genius. Everyone needs a math teacher like this.

Beautiful

Woah that's some really good explanation bro! Doing great!

I actually cried at the kids gasping! I am a teacher (not maths) trying to home educate my autistic son. We are learning complete the square just now and this video made me quite emotional.

simple and logic thanks from Algeria.

This man just made Algebra so much easier for me! *Give this man an award!*

You are the best one i ever had..

very good teacher. thanks

2:08 is the climax

loved this video

oh my god! this is so cool!! Thanks for sharing this.

This has saved my GCSE mock today in two hours

I used the geometric representation in my credentials interview today!! I did it algebraic representation first and when the professor asked me where did the (b/2)^2 came from, I demonstrated it geometrically.

thank you for making maths interesting! keep going professor!!

Awesome!

Dislikes are from the triangle people. Thank you for the visual Eddie. You're a great teacher.

Thank you

It was too awesome.

Eddie Woo is the man!

Awesome Sir.

mind blown!!!!!! if only the teacher we had actually explained it like this I wouldn't be searching the web for hours on how to do these problems. >_

Awesome.........

Amazing

Brilliant! The reason we come to KZfaq for maths!

Nice!

Magical

That's an amazing math teacher.

Your acc blessed Eddie Woo

Eddy Woo is a math guru.. he's beautiful!

love your website name!

As I've dived into math on my own I've learned that we are taught things out of order so all the formulas we learn just seem like tricks rather than the obvious conclusion to something we were taught. We should've been taught the geometry of this formula before the algebra

I can relate to the euphoria the students are experienced because I experienced the same while the math unfolded ❤.

I wish you were my maths teacher 😂😭

Late night browsing on the tube; I studied math at a top tier university, I never knew why it was ever called completing the square. I never did bother to ask. Lol. BUT, I completely get it now. awesome. lol. Algebra is nice, and efficient, but this is pretty amazing. lol. Get this man to 100 mil subs!! The future depends on it. lol. make people like math again. Because it is beautiful

SO SATISFYING

Eddie's 1 million subscriber video lead me here

i need this man as my teacher istg

worth watching...

Mind=Blown

Ohh, mann... Wish i got a teacher like him..... 😢😢😢😢😢

he's like the teacher I never had

I wish I had a teacher like him.

aah... lovely

Both of the math teachers I've had this year were awesome- 1st dude was super chill and clearly and efficiently explained every concept to us. Miss that guy. Second teacher that I just got recently is enthusiastic and incredibly helpful. She makes sure we don't ever have any unanswered questions and clearly loves her job. Now I want this dude too. How much is a plane ticket to Australia? I'm gonna be completely honest- I hate math. it just isn't for me. I'm actually pretty good at math once I know the formulas (I mean duh, that's kinda how math and math classes work) but I don't get any joy from it. And yet somehow the teachers keep me thoroughly engaged. Pay these people more please

Question, how would you visualize this with a -b value? 🤔

I need those students, if they are cheap enough. Nice vid.

Great this really helps a very thick, dyslexic person like myself LOL! But for some reason I have taken an interest in maths because its a challenge!

i love his dress code

big math very big maths 👍🏿 thank you mr woo

This is great stuff and the more ways we can explain things, the greater the likelihood that (a) we find at least one way that works for us and (b) those explanations can combine to deepen understanding. There does need to be caution of course in that geometrical proofs might not always tell us the *whole* story. We live in a physical world where the distance between two points is positive, and an area is positive, and negative distances and areas don't really make sense. So we can neatly see here, for example, that a solution is x = 3, because we make up the side length of (x + 5) = 8 and therefore get an area of 64. However, this might lead us to easily ignore or discard the other solution x = -13, because (-13 + 5) is -8, (-8)² is also 64, and therefore -13 is also a solution to the original equation. It might be possible to somehow geometrically represent that solution by working in terms of displacement and saying "well if we treat moving to the right as positive, and we move x units right, we can then move 13 units left, and do the same in the up/down direction, and construct some other square that might show the relationship, but to be honest, I haven't thought it through fully and to be honest, don't want to, because it seems like more work than is necessary. I'm taking nothing away from an excellent visualisation and if it gets you further than you would otherwise be, that's fantastic, I'm merely saying depending on level, one has to be mindful of the limitations of a particular explanation.

i need a video of their reactions :')