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 6th grade math
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IG0800
New Member

USA
2 Posts

Posted - 04/24/2012 :  21:33:00  Show Profile  Reply with Quote
Mr.hall made dog toys by braiding two 12inch strips of fabric. The strips are three inches wide. There 20 dogs in the shelter. How many 12 inch strips of fabric will they need to make a chew toy for all dogs?
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the_hill1962
Advanced Member

USA
1468 Posts

Posted - 04/25/2012 :  16:22:57  Show Profile  Reply with Quote
This is just simple multiplication. Please tell us what you think needs to be multiplied.
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ever22
Junior Member

United Kingdom
3 Posts

Posted - 05/12/2012 :  16:46:06  Show Profile  Reply with Quote
quote:
Originally posted by IG0800

Mr.hall made dog toys by braiding two 12inch strips of fabric. The strips are three inches wide. There 20 dogs in the shelter. How many 12 inch strips of fabric will they need to make a chew toy for all dogs?


You just need to do 12 20 which is 240
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Subhotosh Khan
Advanced Member

USA
9117 Posts

Posted - 06/29/2012 :  21:01:00  Show Profile  Reply with Quote
quote:
Originally posted by ever22

quote:
Originally posted by IG0800

Mr.hall made dog toys by braiding two 12inch strips of fabric. The strips are three inches wide. There 20 dogs in the shelter. How many 12 inch strips of fabric will they need to make a chew toy for all dogs?


You just need to do 12 20 which is 240 ..Incorrect



You'll need 2 strips for a toy for 1 dog

For 20 dogs, you'll need (2*20 = ) 40 strips

Length (12") and the width (3") are not relevant.


Edited by - Subhotosh Khan on 06/29/2012 21:02:02
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the_hill1962
Advanced Member

USA
1468 Posts

Posted - 06/30/2012 :  18:19:37  Show Profile  Reply with Quote
Yes, the beginning student would want to do something with the "12" and the "three".
It takes some experience to know that the 12 and three are not used to solve this problem.
Isn't math wonderful?
I do not teach 6th grade math but I wouldn't think this is too complicated. For those that do teach in the 6th grade, I would like to read a reply describing why the 12 and the three are not used.
It doesn't seem like I had to do story problems like that back in 6th grade but I don't remember for sure.
In my opinion, trying to have students do too tricky of problems is what gets them turned off from math. I think that having the 12 and the three are just in this problem to make for a 'trick' question.

Edited by - the_hill1962 on 06/30/2012 18:34:03
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Subhotosh Khan
Advanced Member

USA
9117 Posts

Posted - 07/02/2012 :  06:08:24  Show Profile  Reply with Quote
I think this is a perfect "6th grader" problem.

Multiplying 2 by 20 and getting 40 as answer is a 2nd grade problem. I hope objective of this problem was not - to find out whether the student can do simple multiplication!

Here a situation is presented - not too complicated - but student has to choose pertinent data.

This is a very important skill that should be picked up about this time - and this (in my opinion) makes the word problem.

This is important skill set for developing "critical thinking" ability.
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