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My daughter is in the 5th grade in California. Her school uses the state mandated math book and work book. I've been concerned about the teaching techniques up to this point.

Tonight my daughter was showing me a number line technique for determining if fractions are equal, or if one is greater than the other.

As far as I'm concerned the technique is faulty for several reasons. I'll post those after a few Freepers comment.

1 posted on 09/15/2010 8:41:38 PM PDT by Fundamentally Fair
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To: Fundamentally Fair

Why are meters different for boys and girls?


2 posted on 09/15/2010 8:43:28 PM PDT by keepitreal ( Good manners never go out of style)
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To: Fundamentally Fair

I’m just confused as to which length is a meter. I don’t know that it matters, but the different lengths might confuse a fifth grader.


3 posted on 09/15/2010 8:45:01 PM PDT by Tuscaloosa Goldfinch ( T.G., global warming denier.)
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To: Fundamentally Fair

White men can’t jump [as far as white girls].


4 posted on 09/15/2010 8:46:13 PM PDT by ClearCase_guy (Things will change after the revolution, but not before.)
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To: Fundamentally Fair

The differing scales are misleading. Certainly 4/6 > 5/8.


6 posted on 09/15/2010 8:47:28 PM PDT by plymaniac (2010=1994)
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To: Fundamentally Fair

Well, you don’t need more than 4th grade math in CA, anyway.


7 posted on 09/15/2010 8:48:45 PM PDT by Kirkwood (Zombie Hunter)
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To: Fundamentally Fair

4/6 should be farther, but it looks like if you mark it the way they want you to, you’ll think 5/8 is farther.


8 posted on 09/15/2010 8:49:42 PM PDT by ltc8k6
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To: Fundamentally Fair

It doesn’t require them to actually DO math.

Only to know how to count (and read).


9 posted on 09/15/2010 8:49:48 PM PDT by TauntedTiger (Keep away from the fence!)
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To: Fundamentally Fair

Wow. Yank your kid out of public school.

And I support public schools - but my 4th grade daughter would laugh at this problem, as idiotic.


10 posted on 09/15/2010 8:53:16 PM PDT by patton (Obama has replaced "Res Publica" with "Quod licet Jovi non licet bovi.")
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To: Fundamentally Fair

12 posted on 09/15/2010 8:56:08 PM PDT by ConservativeStatement (Obama "acted stupidly.")
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To: Fundamentally Fair

Both lines would have to be the same length before meaningful comparisons could be made between the eights and sixths - this looks like some sort of bizarre semi-psychotic PC scam to show that boys and girls both can jump the same distance even though the numbers seem to show they can’t.....


14 posted on 09/15/2010 9:02:26 PM PDT by Intolerant in NJ
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To: Fundamentally Fair

Just wait 'til they teach her geometry.

15 posted on 09/15/2010 9:06:37 PM PDT by BulletBobCo
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To: Fundamentally Fair

The lengths of those jumps should have been made in decimeters, centimeters or decimal fractions of a meter. The point of the metric system is to avoid those “messy” 3rds, 6ths, 8ths, etc!


16 posted on 09/15/2010 9:07:35 PM PDT by MilicaBee
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To: Fundamentally Fair
Are they following this with lessons in fraction conversion with common denominators, etc?
17 posted on 09/15/2010 9:08:23 PM PDT by SaraJohnson
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To: Fundamentally Fair

Eagerly await your reasons for the faulty technique.


18 posted on 09/15/2010 9:09:55 PM PDT by RitaOK
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To: JenB

Another reason ping


19 posted on 09/15/2010 9:10:46 PM PDT by MilicaBee
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To: Fundamentally Fair
What books are they using? If they are using Turk or Everyday Mathematics be warned. They use these up here in many of the Washington schools. We had a hard time helping my son with his 2nd grade homework, us not understanding the algoryhtms.

We raised such a fuss about it they finally dropped them for this year.

Watch this video to see if this is what it is. Math Education: An Inconvenient Truth

http://www.youtube.com/watch?v=Tr1qee-bTZI

20 posted on 09/15/2010 9:13:43 PM PDT by NavyCanDo
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To: Fundamentally Fair

I know it’s a math problem but I couldn’t help noticing that the word ‘further’ was used. Fail. Further denotes a degree, farther is used when refering to a distance.

Oh, and I see that all scaled are equal but some scales are more equal than others in CA.


22 posted on 09/15/2010 9:26:55 PM PDT by filospinato
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To: Fundamentally Fair

I understand the point that was being attempted, but the problem is with the illustration. The two lines should be equal lengths with one being divided into 8 parts, the other into 6.

But 8/8 is not equal to 6/6 in the illustration.


24 posted on 09/15/2010 9:29:41 PM PDT by zeebee
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To: Fundamentally Fair
It's an illusion:
25 posted on 09/15/2010 9:31:31 PM PDT by Cap&Ball
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To: Fundamentally Fair

Can someone explain to me why, according this graph, one meter equals 7/8 of a meter


26 posted on 09/15/2010 9:32:56 PM PDT by csense
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