Survey of all math software for use in kindergarten classes. Based on google search: [http://www.google.com/search?hl=en&q=Kindergarten+math+math+software+software&btnG=Search Kindergarten math math software software].
National standards for kindergarten math education
[http://www.nctm.org/standards/gradeband.htm NCTM: Standards: An Overview -- Principles and Standards for School Mathematics]
List of kindergarten standards for math education by U.S. state
[http://www.cde.ca.gov/be/st/ss/mthkindergarten.asp California]
Directories found
[http://mathforum.org/teachers/pre-k/soft.html Math Forum: Pre-Kindergarten Teachers: Software]