For the "standard" students, have a look at the following quizzes (you'll find links to notes on the site as well if you need to)
http://tutor2u.net/quiz/economics/jbc_econ_basicconcepts_1.htm
http://tutor2u.net/quiz/economics/jbc_econ_pricetheory_1.htm
http://tutor2u.net/quiz/economics/jcross_econ_demandsupply_1.htm
http://tutor2u.net/quiz/economics/jcross_econ_demandsupply_2.htm
http://tutor2u.net/quiz/economics/jbc_econ_priceelasticity_1.htm
