ABC Teach - An educational site that provides printable material for parents as well as at home teaching material.
ABC-Ya - Great website for educational games to be played with guidance from parents. Games are for grades K-5th.
Reading Rocket - Site for parents to gain information on how to help your child improve their reading skills.
Scholastic - Provides parents with activity and book ideas for kids. Also has a game section to interact with your child.
Star Fall - Has online books for you and your child to read with phonics.