The "HW" button has a link to the math expressions HW for the unit. The "ALT HW" has answers embedded, it provides extra practice and also more challenging work. Students should either do specific math assigned by the teacher or complete HW tasks that they need to work on the MOST. The HW is for the student, not teacher. It should not be too easy, and it should not be so hard that they need re-teaching. It should be work they are ready to practice. Students are also encouraged to use Khan Academy or other videos to support re-teaching or getting ahead.