Great online reading resources for children include Adlit.org, K12 Reader, Oxford Owl, PBS Parents, Reading Rockets, ReadWriteThink, and Scholastic. The best online reading resource to use depends on the age and the proficiency of the child.
Adlit.org provides resources for older students in grades four to 12. Oxford Owl provides resources for younger children, aged 3 to 11. PBS Parents offers resources under the Education tab for still younger children, from infancy to third grade.
Reading Rockets provides a tool that helps parents pinpoint the specific problem their child is having with learning to read. Clicking Start to Target the Problem on this site opens up a resource that defines a variety of different learning difficulties.
Many reading sites cater to different styles of learning with tools ranging from practice worksheets to games and activities. Resources are available for a number of different components associated with reading, including spelling, grammar, comprehension and phonics.
Other free online reading websites for children include Storyline Online, readtomelv.com, Starfall, Online Storytime by Barnes and Noble, and TumbleBooks, in addition to childrenslibrary.org, ABCya, Storynory, and National Geographic Young Explorers. Parents and teachers should review the sites themselves before introducing them to their children to make sure that the content is appropriate for the children's reading level.