Homework
Homework is a hot topic.  Some are for it, some are against it.  It is a favorite topic when our students write persuasive essays.  You can guess their opinion.
I use homework to help students learn test-taking strategies.  We do not have tests in the classroom, except for the annual Stanford-10,  so I give the students practice sheets to prepare them.
Some students who do not finish a minimum amount of work may need to complete it at home.
I can provide extra work or resources if a student needs or wants it.

Not Homework
The following are not homework; they are just a natural part of every citizen's life:

Reading
Writing
Using numbers

Therefore, they should also be done at home, regardless of what a teacher assigns.
. "The child is much more spiritually elevated than is usually supposed. He often suffers, not from too much work, but from work that is unworthy of him."
Maria Montessori