Parents can sign up for free and practice reading and answering questions with students.
Parents can sign up for free and assign their student work there. It also provides answer keys so they know where their student is going wrong and such.
Parents may sign up for free and can access videos to assist students with their learning in all categories.
Fact Monster
This has fun games for Math facts, homework helper as well as Science and Language activities.
While EB doesn't have a district account with Flocabulary (allowing student home access) it is used by many classrooms. Parents can access songs and some parts of the lessons for free.