My 8th grade student is taking a Latin class. She picked up a great tip there that my 12th grade student borrowed for his Spanish class.
Here's what you do. First, pick up some colored index cards from the office supply store. You'll need blue for masculine nouns, pink for feminine nouns, yellow for neuter nouns, and white for verbs.
On the front you write the word in English. On the back, you write the word in Latin and the declinations.
My son and daughter both say it's a pretty helpful exercise.