Update list for Science Teacher Helper

Science Teacher Helper 2.0 changelog from June 10, 2012

Science Teacher Helper 3.3 from December 6, 2008

Science Teacher Helper 3.2 from January 10, 2008

Major Update

Older Science Teacher Helper versions:

2.0 (Jun 10, 2012)3.3 (Dec 6, 2008) • 3.2 (Jan 10, 2008) •

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