Comparativos

http://www.studyspanish.com/practice/equal.htm

http://www.studyspanish.com/practice/irregcomp.htm

http://www.spanishdict.com/topics/practice/50

http://www.elearnspanishlanguage.com/tests/te-comparatives.html

http://www.bowdoin.edu/~eyepes/newgr/compar.htm

http://spanish.tolearnfree.com/free-spanish-lessons/free-spanish-exercise-18166.php

http://www.quia.com/pop/10720.html

http://www.quia.com/rr/382296.html

http://personal.colby.edu/~bknelson/SLC/comparisons1.php

http://www.proprofs.com/quiz-school/story.php?title=comparativessuperlatives

Comparisons of equality:

http://www.studyspanish.com/lessons/equal.htm

http://www.123teachme.com/learn_spanish/comparisons_equality

Comparisons of inequality:

http://www.authorstream.com/presentation/Chloe-28139-comp-inequality-Comparison-or-Spanish-Translate-a-as-Entertainment-ppt-powerpoint/

Comparisons and superlatives:

http://www.elearnspanishlanguage.com/grammar/comparatives.html