As an English teacher, I work hard to make sure that all of the curriculum that I integrate serves a long-term purpose.  Vocabulary is one of those areas that I feel is vital for the future of the students. In fact, I just watched a webcast that stated the extreme importance of vocabulary across every academic subject in order for there to be student success.
you can watch that webinart here:
Webinar link: “Making Academic Vocabulary Stick” with Marilee Sprenger http://event.on24.com/eventRegistration/console/EventConsoleApollo.jsp?&eventid=1355689&sessionid=1&username=&partnerref=ASCDweb&format=fhaudio&mobile=false&flashsupportedmobiledevice=false&helpcenter=false&key=2D442B642C51FDDD75CB66B37A89487F&text_language_id=en&playerwidth=1000&playerheight=650&overwritelobby=y&eventuserid=166678294&contenttype=A&mediametricsessionid=133215590&mediametricid=1955122&usercd=166678294&mode=launch

I also want to provide my students with study aids, and I really lucked out when I came across Quizlet.

Quizlet is a free, online source that helps students create study lists and then provides them with ways to study those lists.  So at the beginning of the year, I go onto quilt and add 14 lists with approximately 20 words per list.  The student creates a free account using their school-issued email address.  The student then requests to join a specific class, that I moderate and control.  In other words, no one is allowed into the class that isn't supposed to be there.  After the student is a member of the class, she can begin looking for her specific "sets".

When the student clicks on the correct list, she is then given a list of options.  A student can choose from basic flashcards, a few games, and even an option to take a practice test.  Many of my students will take 3 and 4 practice tests in preparation for their quiz at school. 

                            

When the student is finished taking the practice test, there is actually an option to have the quiz graded for her.  Quizlet then proceeds to correct the test and show the right answers.  

Quizlet is used by millions of people around the world.  If someone has made her set "public" anyone can seek and find it.  My own children have found lists of terms for their Geometry, history, Spanish and Biology courses.  

So go check it out! You may have just stumbled on something that you will soon wonder how you ever taught without it! 

References: 

Quizlet: https://quizlet.com/latest