Math Notations
There are Twice as many girls as boys: 2G=B or G=2B?
03/25/2009
I got a reply back on the blog. His comments talked about additional verbal problems and phrases that students often mess up like "the difference of M and N" and "M is less than N". He also have me a good idea of some other phrases to watch out for involving division, factoring and mulitples. An example of a division phrase students often mess up is "the ratio of M to N". The phrasing is very important in subtraction and division because they are not commutative. Even though I realized this it reminded me that the order you put the numbers in addition and multiplication phrases does not matter. Since students may have always got the right answer by putting the numbers in any order in addition and mulitplication phrases it may have led them to believe that they can do the same for division and subtraction phrases. The responder also gave me a useful mnemonic for my students to remember the ordering in the phrases of multiple and factor.
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