General genetics: I taught two semesters of the undergrad discussion sections on classical Mendelian and molecular genetics. 

Intro to Biology: I taught one semester of lab exercises for freshman undergrads with non-science majors. 

Thank you card from elementary school kids.

I was the Outreach Chair on the Grad Student Advocacy Committee at Knoxville for my PhD program, and the experience taught me a lot about scientific and social challenges. I helped create a community for incoming grad students and served on peer committees for candidacy exams (I learnt a lot of obscure knowledge about plant hormones, pathogenic and tundra microbes, protein receptors, and the biophysics of photosynthesis).