http://www.majortests.com/sat/math-skills.php

http://www.freesatmath.com/

https://www.vocabtest.com/

http://www.english-test.net/sat/

http://www.intensivevocab.com/vocabulary_words/word_of_the_day_today.htm

http://www.sheppardsoftware.com/vocabmania.htm

http://www.act.org/qotd/

http://sat.collegeboard.org/practice/sat-question-of-the-day