All grades:
Unite for Literacy- www.uniteforliteracy.com (reading website with lower level e-books)
Storyline Online- www.storylineonline.net (reading website with narrated books)
Khan Academy- www.khanacademy.org (math practice, create free account)
ABCYA- www.abcya.com (interactive games and activities)
Funbrain- www.funbrain.com (interactive games and activities)
Greg Tang- www.gregtangmath.com/games (math games)
Grade 2:
RAZ Kids- www.raz-kids.com (reading website with e-books, need username and password)
Grades 3 & 4:
TrueFlix- www.auth.grolier.com/login/tfx/login.php (interactive reading website, need username and password)