## Halloween Class Video

Very cool math teacher (Bit long but still worth watching)

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### Comments

18 comments posted so far. Login to add a comment.

26

#### 2. odthegreatest commented 12 years ago

virtual reality

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#### 3. SjN commented 12 years ago

this video made me cry.. it made me so sad

38

#### 6. Andrein commented 12 years ago

The demonstration for 1=2 is more a trick, a "faulty" demonstration. It goes like this:

Let a=b .

We multiply by a and we have a^2=a*b .

Then we add a^2 and we have a^2+a^2=a^2+a*b .

Now we subtract 2*a*b and we have 2*a^2-2*a*b=a^2+a*b-2*a*b .

Which can be written as 2*(a^2-a*b)=a^2-a*b .

Now we divide by (a^2-a*b) and we have 2=1 .

The problem is that a^2-a*b is 0 in this example, so 1*0=2*0.

Note that a^2 means a squared.

Let a=b .

We multiply by a and we have a^2=a*b .

Then we add a^2 and we have a^2+a^2=a^2+a*b .

Now we subtract 2*a*b and we have 2*a^2-2*a*b=a^2+a*b-2*a*b .

Which can be written as 2*(a^2-a*b)=a^2-a*b .

Now we divide by (a^2-a*b) and we have 2=1 .

The problem is that a^2-a*b is 0 in this example, so 1*0=2*0.

Note that a^2 means a squared.

29

#### 10. stepanstas commented 12 years ago

wow

Probably took him endless hours to sync up and make it look so perfect.

Imagine if he didn't have a laughing class, that would have been sad.

Probably took him endless hours to sync up and make it look so perfect.

Imagine if he didn't have a laughing class, that would have been sad.

31

#### 11. cincodemayo commented 12 years ago

wish all teachers like that, not like those union teachers that only care about their pay check and job security and not about teaching.

20

#### 15. richardhalo commented 12 years ago

#(removed comment) you think you can be better? Lowlife moron!

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#### 18. krazeeeyez commented 11 years ago

hi from the future

## +37 1. cosminb commented 12 years ago