MATHMAN: Two Negatives Equal One Positive

An online math lesson in the perils of the Double Negative. Using bluescreening and FX technology I demonstrate the perils and temptations of having too many negative signs, leading up to the all-powerful
"Two Negatives Equal One Positive"

Category:

Howto & Style

Tags:

• Math
• education
• mathematics
• bernard
• finnigan
• double
• negative
• class
• calculator
• teacher
• instructor
• educator
• tutor

[naurozbaloch]

But why - times - becomes + , can you give an example from Nature?

[SpreadingtheMuse]

@naurozbaloch

Even after teaching this for 10 years I was unable to give an example of multiplication -  - = + For multiplication doesnt occur in nature :( With plussing and minusing its easy, just say "Isnt minusing away your DEBT a positive thing?" But Its harder with multi.

For now all we can say is since plussing and timesing follow the same rules of associative and distributive, they have to follow all the other same rules as each other too.

[Nikki07734Mikki]

i thought a negative and a positive equal a negative...

[SpreadingtheMuse]

@Nikki07734Mikki

They do. Didnt I say that?

[Hinatathehexgrl]

i hate math but ur vid is awesome! i have to make a lesson plan on this for a project and i'm gonna see if i can use this vid as a visual for it

ty :-)

[SpreadingtheMuse]

I'm very glad. ;)

I just hope the sound works for you. You can always type up a transcript to pass out for your viewers to read along.

[naurozbaloch]

Right , thanks for your response.



[RhonniiRhonnii]

You are the only person that could help me understand this. Thank you! you helped me help my daughter too, you are an excellent teacher (man I wish you were her math teacher) and I love the special effects, lol!

[gennkill]

omg this video makes math so fun

[ScottishProfessor]

See my video Double Negation: Logical Fallacy

[richardgomm]

Thank you, you have helped me out here, i could not get my head around it!

[Dorjan24]

No problem at all krayzgerman.

If there is anything else I can help you with, let me know ^,^