DU Common Core Math ?

[JohnnyReb]

A pencil works better.

What method did you use?

163548029464632893746209902344892982558

I started off 3 into 16=5 with 1 left over...3 into 13=4 with 1 left over....3 into 15=5 0 left over.....3 into 4=1 with 1 left over ......and when you get to the last number if it can be divided with nothing left then it's divisible by 3.

   

[hopfrog]

  There are 10 kinds of people in this world.

  Those that understand binary numbers
  And those that dont.

[GOBUCKS]

nadinmath: 60 centimeters = 1 meter

[marv]

163548029464632893746209902344892982558

I started off 3 into 16=5 with 1 left over...3 into 13=4 with 1 left over....3 into 15=5 0 left over.....3 into 4=1 with 1 left over ......and when you get to the last number if it can be divided with nothing left then it's divisible by 3.

It's easier if you just strike out the 0s, 3s, 6s, and 9s. Then strike out digits that add to a digit divisible by 3 like 1+5, 8+4, 7+1+4, etc. When you're done, if nothing remains, the number is divisible by three. Otherwise, not.

But ya done good!

[cmypay]

It's easier if you just strike out the 0s, 3s, 6s, and 9s. Then strike out digits that add to a digit divisible by 3 like 1+5, 8+4, 7+1+4, etc. When you're done, if nothing remains, the number is divisible by three. Otherwise, not.

But ya done good!

I teach my students if the digits add to a number divisible by 3, then the whole number is divisible by 3, never thought about striking 3,6,and 9. Good to know! Thanks

[FlaGator]

  There are 10 kinds of people in this world.

  Those that understand binary numbers
  And those that dont.

Mostly tech people get that.

[BlueStateSaint]

Mostly tech people get that.

I'm not what one would consider a 'techie,' but I get it.

[dane]

163548029464632893746209902344892982558

I started off 3 into 16=5 with 1 left over...3 into 13=4 with 1 left over....3 into 15=5 0 left over.....3 into 4=1 with 1 left over ......and when you get to the last number if it can be divided with nothing left then it's divisible by 3.

Why?  Is the goal to find long strings of numbers evenly divisible by three?

[marv]

Why?  Is the goal to find long strings of numbers evenly divisible by three?

No. It's just fun with numbers. It's like common core, only easier and more accurate.

[Rebel]

Common core:

1+1= POTATO
I CAN COUNT TO HAM!
MY FAVORITE NUMBER IS HAM!!

The absolute genius of Obama. Take the worst performing school system's superintendent and put that man in charge of the nations education. Oh and pay a lot of cronnies lots of money for pure crap.

[youtube=425,350]-o98HK2Lvw0[/youtube]

[Rebel]

nadinmath: 60 centimeters = 1 meter

 

Forgot all about that!

[I_B_Perky]

Mostly tech people get that.

If someone laughs at it, then you know they understand base 2. If they look confused, tell them to go to the command line on their PC and type in Format C:   

[Delmar]

Thank God that I'll probably be retired before any of the children that are learning this new super math enter the workforce.  How could I ever hope to compete with these up and coming Einsteins?  What's going to happen when they use their super math powers to figure out their share of the 17 trillion dollar debt?

[NHSparky]

Or tell them that their System32 file has a virus on it and that they can get rid of the virus by deleting that file.

My favorite to piss off my co-workers is converting binary to hex and vice-versa.

Easy method, if going from binary to hex, simply split into every four characters, then that is 1-F.  Example:

1001000111001011....1001/0001/1100/1011...91CB.

Yes, lots of relays, etc., still let us get this far down into the weeds.

[thundley4]

It's easier if you just strike out the 0s, 3s, 6s, and 9s. Then strike out digits that add to a digit divisible by 3 like 1+5, 8+4, 7+1+4, etc. When you're done, if nothing remains, the number is divisible by three. Otherwise, not.

But ya done good!

I did it on the screen, ignored the 3s, 6s and 9s. when other numbers added up to a multiple of 3, I dropped them and went to the next numbers.

Which number is divisible by 11?

94,536,805

95,436,804

96,435,804

[I_B_Perky]

Or tell them that their System32 file has a virus on it and that they can get rid of the virus by deleting that file.

My favorite to piss off my co-workers is converting binary to hex and vice-versa.

Easy method, if going from binary to hex, simply split into every four characters, then that is 1-F.  Example:

1001000111001011....1001/0001/1100/1011...91CB.

Yes, lots of relays, etc., still let us get this far down into the weeds.

LOL!!!!

Binary to hex is easy and hex to binary is easy.  I love binary! Back in school I could never, ever do equations in hex. I always converted it to binary and did it that way. The Prof let me do it as long as it wasn't in base 10.     

[marv]

I did it on the screen, ignored the 3s, 6s and 9s. when other numbers added up to a multiple of 3, I dropped them and went to the next numbers.

Which number is divisible by 11? =3

94,536,805 -no

95,436,804 -yes

96,435,804 -yes

[thundley4]

I did it on the screen, ignored the 3s, 6s and 9s. when other numbers added up to a multiple of 3, I dropped them and went to the next numbers.

Which number is divisible by 11? =3  eleven

94,536,805 -no  yes

95,436,804 -yes  no

96,435,804 -yes  no

[marv]

See how fun it is.......binary, octal, decimal, hexadecimal...

[I_B_Perky]

See how fun it is.......binary, octal, decimal, hexadecimal...

I ain't heard of octal in 25 years, Marv.  Never used it professionally. Not sure why they even taught it.   

[Crazy Horse]

I ain't heard of octal in 25 years, Marv.  Never used it professionally. Not sure why they even taught it.   

The same reason we have the Rankin temperature scale.

[marv]

IBM's System 3 was octal based. It was designed for small businesses:

It had its own 96 column punch card:

It barely got out of the seventies because hardware was getting cheaper, smaller and faster. The Commodore 128 could compete with it:

[I_B_Perky]

IBM's System 3 was octal based. It was designed for small businesses:

Cool. I guessing system 36 and the AS400 replaced that?

[Scoobie]

Our school systems changed over to some Common Core related nonsense this year school year. I absolutely loathe everything it stands for.

My daughter, aged 13, who has always struggled with Math, and who I have tried to teach (because of her difficulties) that she would need to apply herself that much more because of it (life lesson and all), now doesn't have to apply herself at all, because it's got no structure. She loves it, and pretty much doesn't need to apply herself at all.

My son, aged 6, who has a natural affinity for numbers (he can already do multiplication and division in his head), will suffer because of the stupid ways in which they have to "show work" in such an absurd way.


God forbid kids these days be encouraged to work hard and see the fruits of their labors through achievement and advancement. It's infuriating, especially when the education system goes against everything we try and teach them at home about personal responsibility.

[vesta111]

Our school systems changed over to some Common Core related nonsense this year school year. I absolutely loathe everything it stands for.

My daughter, aged 13, who has always struggled with Math, and who I have tried to teach (because of her difficulties) that she would need to apply herself that much more because of it (life lesson and all), now doesn't have to apply herself at all, because it's got no structure. She loves it, and pretty much doesn't need to apply herself at all.

My son, aged 6, who has a natural affinity for numbers (he can already do multiplication and division in his head), will suffer because of the stupid ways in which they have to "show work" in such an absurd way.


God forbid kids these days be encouraged to work hard and see the fruits of their labors through achievement and advancement. It's infuriating, especially when the education system goes against everything we try and teach them at home about personal responsibility.

Scoobie, I have found that most anything can be taught to a child  or adult if they have a interest in the subject.

It takes a special kind of teacher to find a way to make a subject interesting and fun, something to look forward to.   

I remember the high school male teacher in the NYC school system that was taring his hair out trying to teach math to his kids in an inner city school.    One day he happened to over hear a couple gang bangers talking about the cost of weed and they were speaking of the cost in grams.   

Bingo, lights and bells went off so he redirected his teaching methods to what the kids would use in their lives.    He went into Everything from what a 20% rise in food stamps would mean in buying power to a 15% raise per gram in drugs. He took the kids on field trips  to the stores having sales of items to  see and calculate  if this was  a good deal or a scam.

The test scores of the kids went up so high the school began to look into his methods and
he was fired for not following the lessons plan he was given.

Math ,not all peoples brains are wired to be able for everyone to accept the concept of everyone else.  Same as most subjects from Art to learning a new Language.

One size does not fit all.