Math

Found some hands on lessons here for teaching fractions

http://www.superteacherworksheets.com/fraction-cont.html

MathATube.com  Integers - printable worksheets with answer keys
http://www.mathatube.com/integers-worksheets.html

MathUSee Drill page for basic facts:
http://www.mathusee.com/wp-includes/popup_math_drill.php

Saxon Home School Math
http://saxonhomeschool.hmhco.com/en/products/default.htm?level2Code=M0021

Math-aids.com Lots of printable worksheets and  answer keys
http://www.math-aids.com/Algebra/Pre-Algebra/Expressions/Simplifing_Variables.html 

Math Tutorials
http://www.coolmath.com/algebra/