[excellency]

You know, my question is mostly related to teenagers of 10 to 15 that I don't know which way is better: whether to teach the material first or to play the game first? because adults can understand the rules and ofcours,don't always need to play a game.
for example, imagine that I'm going to teach a grammatical point about simple present, and also I know the game of dice and die, in which students play it by throwing the dice and moving the die on the flashcards and then asking questions and answering them. so, in fact, I'm baffled to do what? thank you for your help.