Discussion:  All Topics 
Topic:  Expressions vs Equations 
Related Item:  http://mathforum.org/mathtools/tool/99226/ 
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Subject:  RE: Expressions vs Equations 
Author:  Ed Bujak 
Date:  Jan 27 2011 
to [1] from LFS:
That's why I write DOWN the page all the time (and the kids tell me I am wasting
papaer!)
3(x+2)4x+5=3x+64x+5=x+11
is explained as:
3(x+2)4x+5
3x+64x+5
x+11
and I try to line up the subsequent terms simplified from the terms above.
I try to explain to the kids that expressions do not have an equal sign, so do
not introduce it.
I try ot explain that equations (or inequalities) do have an equal sign (or
inquality sign) so preserve and line up (above/boelow) all the equal signs.
Nomenclature is extremely important for precise meaning and interpretation ...
we should always use it properly.
 
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