While I was in the classroom I would use technology to reinforce skills that we had covered in class.  These are a few web sites that use games which create interest to help students remember these skills and concepts.

www.schooltimegames.com

This will take you to games about social studies, language arts,mathematics, science, logic, sports, arcade, and puzzles

www.primarygames.com

This is a version of hangman where questions are asked and one must think to solve these questions or be hung.