Discussion:  All Topics for Patterns and sequences 
Topic:  Order of Operations (BOMDAS) 
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Subject:  RE: BOMDAS and PEMDAS and the beat goes on! 
Author:  db 
Date:  Apr 15 2007 
review. Thanks ever so much. But, er..., uh,..., what is the beat please? I
cannot seem to make it right:(
debbie
ps. we use guys as well as "girls" in GEMDAS, which, BTW, I think I will stop
using for all of the reasons cited here. Thanks everyone.
On Mar 30 2007, p8s wrote:
> I teach 6th grade math and have taught 7th and 8th as well. My
> issue with both of the methods mentioned above is md and as. Kids
> get it in their heads, that multiplication and division must be done
> in "that order" multiply first then divide which also applies to
> adding and subtracting. (Adults still believe that too you'd be
> amazed) I do not use either of these We use a rap which I wrote
> which includes our arms to represent the different parts of the
> order. If you're interested it goes like this...
(I preface this
> with a discussion of grouping symbols for those h.s. folks who are
> worried)
Parentheses , inside out (students should raise their arms
> over their heads slightly bent to represent the parentheses)
Then
> exponents (students hold their right hand above their head, just
> above their right ear with their pointer and thumb making a c to
> represent the exponent their head is the base)
Multiply ((arms in x
> infront of chest,)or Divide (right arm makes a slash across chest)
> LEFT TO RIGHT (swish arms across chest to indicate left to right)
> Then add (take a step forward) or subtract (take a step back) LEFT
> TO RIGHT (swish arms again)
The beat is ...
Par en the ses in
> side out
then ex pon nents
mul ti ply or di vide left to right
> then add or sub tract left to right
we call it the OOO song it
> seems to work much better and they like to get up out of their desks
> and do it! You can put a cha cha cha at the end if you're feeling
> silly
PS the girl shopping thing a little sexist!
 
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