Here are a few ways to say it, depending on the context:
* "Je vais faire mes devoirs." (This is the most common and direct way to say "I'm going to do my homework.")
* "Je vais m'installer pour faire mes devoirs." (This means "I'm going to settle down to do my homework.")
* "Je vais travailler sur mes devoirs." (This means "I'm going to work on my homework.")
Remember, the best way to say it will depend on the specific situation.