Equal
same as
2+1
=
1+2
2+2
=
4
2-1
=
1
2x0
=
0
6/2
=
3
http://dictionary.kids.net.au/word/equal
http://www.coolmath4kids.com/fractions/fractions-04-equivalent-01.htm
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http://www.mathsisfun.com/equivalent_fractions.html
http://www.mathsisfun.com/definitions/equal-sign.html
http://www.ducksters.com/kidsmath/fractions_equivalent.php
http://pbskids.org/cyberchase/math-games/melvins-make-match/
http://www.sheppardsoftware.com/math.htm