Subtraction

http://www.geocities.com/sueamorris/Subtraction.html

-Definitions, online activities and subtraction short-cuts

http://www.aaamath.com/B/sub.htm

-Basic subtraction skills

http://www.dositey.com/addsub/Mystery4.htm

-Concentration game with basic facts

http://www.superkids.com/aweb/tools/math/subtract/

-Worksheet creator

http://www.scweb4free.com/elemsub.html

-Scroll down page for a cute interactive game

http://www.scienceacademy.com/BI/sub.htm

-Advanced subtraction basketball

http://www.kidzone.ws/math/

-Free printable worksheets

http://lessonplanz.com/Lesson_Plans/Mathematics/__Grades_K-2/Addition___Subtraction/index.shtml

-Lesson Plans

http://www.missmaggie.org/

-Interactive games