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Topic: Which came first, * or / ?
Replies: 1   Last Post: Aug 13, 1995 6:48 PM

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Kevin J.Maguire

Posts: 16
Registered: 12/6/04
Re: Which came first, * or / ?
Posted: Aug 13, 1995 6:48 PM
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'morning all,
Nancy referred to the teaching of multiplication and division as
a concurrent action on her part. This is an excellent practice. When
faced with introducing the operations to young children I have tried to
link the four operations. I've often referred to this practice as
"mucking" around with numbers. My practice has been to make up a grid
(I'll try to represent it here but I may not succeed):
_________
|7 5| From this grid of the array I can produce the
| | following relationships:
| 35 | 7 x 5 = 35
| | 5 X 7 = 35
|2 12| 35 / 7 = 5
_________ 35 / 5 = 7
7 + 5 = 12
5 + 7 = 12
12 - 7 = 5
12 - 5 = 7
7 - 2 = 7
7 - 5 = 2
2 + 5 = 7
5 + 2 = 7
One can add 1/7 of 35 = 5; and 1/5 of 35 = 7.
Note: I hope the array appears ordered on your monitor. It looks O.K.
on mine)
I know that the above is simply basic number facts but I did
extend it into working with the four operations.
Regards,
K.



Kevin J. Maguire
School of Education Telephone: 61 3 9479 2080
La Trobe University
Melbourne
Victoria






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