Here are a list of recommended websites for your students:
Language Arts/Reading Practice.
http://www.iknowthat.com/com/L2?GradeLevel=1:1&Subject=Language Arts
http://www.tvokids.com/framesets/bby.html?game=164&
http://www.tumblebooks.com/library/asp/home_tumblebooks.asp
http://www.storyplace.org/eel/other.asp
Practice for ESOL
http://reading.macmillanmh.com/treasurechest/grade1.html
Math Practice
http://www.learningplanet.com/stu/index.asp?tab=1
http://www.funbrain.com/brain/MathBrain/MathBrain.html
Math Test Prep
http://www.eduplace.com/kids/mhm/testprep/gr1/index.html
Patterns
http://www.tvokids.com/framesets/bby.html?game=141&
Other
Activity Center
http://www.bbc.co.uk/schools/laac/menu.shtml
Early Mouse Skills
http://ngfl.northumberland.gov.uk/ict/mouseskills/Default.htm
Typing Practice