The rules of basketball, thankfully, are fairly straightforward. However, for the younger players, some rules can be easily forgotten. The three-second rule addressing how long an offensive player can be in the key before clearing out is a good example. Once you have taught the rules of the game to your team, there is a simple way to make sure that they don't forget them. Have them tell you the rules. Spend a few minutes during each practice quizzing them. Make it fun. Additionally, you can teach and reinforce the rules of the game during drills.