Q&A #10504

Teachers' Lounge Discussion: Proportions and ratios

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From: Judy

To: Teacher2Teacher Public Discussion
Date: 2005042215:52:37
Subject: proportions

I ask my students to label their proportions when setting them up. 
For example:  

A recipe that serves 8 people requires 3 pounds of ground beef.  How
much ground beef would be needed to serve 15 people?

servings    8    15
            __ = ___
pounds      3     x 

The left side identifies the facts given in the question;  the right
side identifies the WHAT IF portion of the question.

Students use a label that is meaningful to them....servings, serves,

pounds, meat, ground beef   The only purpose of the label is to
organize the numbers in a way that is appropriate

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