National Geographic for Kids http://www.nationalgeographic.com/kids/
Internet 4 Classrooms All Grade Levels- Tons of fun to practice
Sound Demonstrations-Interactive http://www.bbc.co.uk/schools/scienceclips/ages/9_10/changing_sounds.shtml
Area Multiplication and Division http://www.learner.org/channel/courses/learningmath/number/session4/part_b/multiplication.html
Grammar Games