Homework is not meant to be a burdensome task. Its aim is to develop good study habits and to prepare the children for the next stage in the education process - independent study at high school.
Good study habits include:
doing homework in the same place, at the same time, each day
having no distractions (e.g. television)
being organized so that all necessary materials are available
doing projects or assignments early or on time, not leaving it all until the night before it's due.
having parental support and encouragement
having interested, supportive parents who pass on the value of a good education to their children's future.