Other
United States Specialty Sports Association
Formerly the United States Slow-pitch Softball Association, now includes fast-pitch and baseball programs.
Other
National Fastpitch Coaches Association
Official home based in Columbia, Missouri. See national scores, current archived tips, rankings and daily headlines.
Project Britain
Primary Homework Help: Sound Quiz
Read some fast facts about sound energy first, then try a fourteen question review quiz. Check your answer after each question.
Other
National Softball Association
Visit the homepage for the National Softball Association. Contains registration information, tournament play, World Series information, an official rulebook, and more.
Centers for Disease Control and Prevention
Centers for Disease Control: Bam! Body and Mind: Softball
Learn from an expert softball player about playing the game of softball. Discover what gear you'll need, how to play it safe, and the science behind the game.
Other
North American Fastpitch Association
Organization sponsoring boys and girls teams. Read profiles, rules, contact info and photos.
University of Cambridge
University of Cambridge: Maths and Sports: The Speed of the Game
Team games like football, hockey, basketball, handball and wheelchair rugby are played on pitches or courts of different sizes with different numbers of players. The density of players on the pitch plays a significant role in determining...