Believe it or not, Algebra has a TON of vocabulary that you need to not only be able to remember, but to also understand. I have created Quizlet sets for each Unit Test, which you are expected to study and learn. You may be quizzed, and even if you aren't, this vocabulary will be ALL OVER your tests, so take this seriously.
In the case of math vocabulary, a good way to study is to use flashcards.
When you use Quizlet, the process is basically the same, except you click the star in the top right corner of cards that you don't know or have to think about. When you go back through the cards, select the option to study starred cards.