I have attached a PPT to a game to review/practice the past tense for Chapter 6. I call it "Show Me The Money!"
Split the class into 2 teams. Each team starts with $1000.
One student from each team comes to the front. They play Rock, Paper, Scissors.
The winner chooses a reward amount (500 is most difficult, 100 is the easiest).
Click on a square with that amount to reveal the simple present verb.
For my low level, I just have the student conjugate the verb (run --> ran).
For high levels, I have them conjugate the verb and use it in a sentence. (run --> ran --> I ran to school.)
If they are correct, their team wins that amount.
If they are incorrect, their team loses that amount.
If they are incorrect, the other team's person can answer for 1/2 the points.
This game can easily be adapted for just about anything. Any tenses, use pictures instead, etc.