According to a website I've read, first, start off in making your place homework-friendly. Contain in there all the essentials like papers, pencils and other stuff. Best to keep the area distraction-free for a productive day.
Second is to establish a schedule that suits your toddler well. Some kids participate actively during the afternoon while others do so at night.
You can read more tips here: http://kidshealth.org/en/parents/homework.html