If you want some fun maths or literacy activities to do online then check out the Homework page on this blog.
It has just been updated with some new sites aimed at encouraging both maths and literacy skills. Great for all ages.
Do check out Funbrain. You can even read Diary of a Wimpy kid online through Funbrain.
These sites have all been recommended and tried out by teachers, librarians and some students so do have fun.