From: David Tristano <davidt@mathforum.com>
To: Teacher2Teacher Public Discussion
Date: 2000120423:09:53
Subject: Re: Algebra 1

The way I remember reflexive, symmetric, and transitive is this:

R-S-T (consecutive letters)
and 
1-2-3

Which stands for this:

R -> reflexive property of equality
a=a
(one quantity is involved)

S -> symmetric property of equality
if a=b then b=a
(two quantities are involved)

T -> transitive property of equality
if a=b and b=c then a=c
(three quantities are involved)

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