helfrichbio Mr. Helfrich
Olentangy High School anatomy/biology instructor
http://www.olentangy.k12.oh.us
 
Welcome to Mr. Helfrich's Biology web page!  I have created this page as a way to stay current in my class in case of absence as well as to augment learning by doing some of the alternative activities.
Last updated  2008/09/28 10:42:58 PDTHits  303