What is the best way to teach 'more than and less than'?

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What is the best way to teach 'more than and less than'?

Postby matrix0405 » Wed Dec 29, 2010 5:31 pm

My child is confused by the 'more/ less'-type of english used in maths. How do you teach or illustrate this concept to pri kids? Math guru pls help.

For example: Q. Noel has 5 cubes (given). Possible permutation for question
a) Bryan has 2 more cubes than Noel.
b) Bryan has 2 less cubes than Noel.
c) Noel has 2 more cubes than Bryan.
d) Noel has 2 less cubes than Bryan.

How many cubes does Bryan has?

Is there a good website or youtube or tools that is effective to show the child this concept?

matrix0405
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Postby mrswongtuition » Wed Dec 29, 2010 6:04 pm

Got marbles or erasers and show using the real items.
Or draw it out (draw the items then translate into model).

Do it a few times and once they understand the concept and can visualize without the real objects, they should have no problem.

mrswongtuition
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Re: What is the best way to teach 'more than and less than

Postby Tang » Wed Dec 29, 2010 6:30 pm

Hi,

Use > for more than

and < for less than


[Encounter problem posting]

Tang
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Postby pixiedust » Wed Dec 29, 2010 8:30 pm

I use same method as mrswongtuition.

only I used snap cubes:
http://www.learningresources.com/produc ... alViews.do

Then move on to draw it out.

pixiedust
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Postby Suz855 » Thu Dec 30, 2010 11:55 am

a) Bryan has 2 more cubes than Noel.
b) Bryan has 2 less cubes than Noel.
c) Noel has 2 more cubes than Bryan.
d) Noel has 2 less cubes than Bryan

The individual/number after 'than' is the starting number ... 2 more means you add 2 to it, 2 less means you take away from it

5 + 2 =7
5 - 2 = 3

As for c & d, we can rewrite it in number sentence as such
? + 2 = 5
Since part + part = whole, part is missing thus we take whole - part

? - 2 = 5
Since whole is missing, we add the 2 parts.

Ps, number bond and fact families concept must be introduce to kids and their understanding will help them to have good foundation in Maths.

Have fun
:D

Suz855
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Postby matrix0405 » Thu Dec 30, 2010 9:37 pm

thanks guys, will try out the methods.

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Postby mummaid » Wed Jan 05, 2011 10:09 am

My DS is in K2 this year, he also has problem understanding the 'less than' & 'more than' concept eg.

5 is 2 less than ____
5 is 1 more than _____
____ is 1 less than 6
____ is 3 more than 5


Is there any good way of teaching such concept, I've hard time explaining and DS always end up in tears doing this type of questions. :scared:

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Postby mummaid » Wed Jan 05, 2011 10:10 am

My DS is in K2 this year, he also has problem understanding the 'less than' & 'more than' concept eg.

5 is 2 less than ____
5 is 1 more than _____
____ is 1 less than 6
____ is 3 more than 5


Is there any good way of teaching such concept, I've hard time explaining and DS always end up in tears doing this type of questions. :scared:

mummaid
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Postby autolycus » Wed Jan 05, 2011 1:12 pm

mummaid wrote:Is there any good way of teaching such concept, I've hard time explaining and DS always end up in tears doing this type of questions. :scared:

Board games (the "how many steps back, how many steps forward" type) can work.

You can also try a kind of number line approach (or MRT stations?)

e.g.

--3--4--5--6--7--8--9--

Your first question:

Code: Select all
What is 5 less than?

(5)--6--7--8--9-->

5 is 2 (steps) less than what?

(5)--6--[7]--8--9-->

Answer is 7.


Your third question:

Code: Select all
What is less than 6?

--3--4--5--(6)

If it is 1 (step) less than 6, what is it?

--3--4--[5]--(6)

Answer is 5.


The trick is to teach 'less than' and 'more than' directionally, rather than quantitatively. You can then relate it to subtraction and addition if your DS is comfortable. Different children see arithmetic in different ways.

autolycus
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Postby mummaid » Wed Jan 05, 2011 3:35 pm

Thanks for sharing.

DS is confused. He tends to 'add' when he sees the word 'more' and 'subtract' when he sees the word 'less', therefore

5 is 2 less than 3 => which is incorrect
5 is 1 more than 6 => which is incorrect

Will try to reinforce the numberline method and guess more practice sessions with him too (hopefully not tearing sessions for him)

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