John Krieger
John Krieger
@johnkrieger - Author
John Krieger
@johnkrieger - Author
I taught science to elementary and middle school students for many years, and I am currently developing and marketing educational materials. My main ... more
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John's books
Live on Discovery
The Discovery of Germs
What Does It Take to Make a Scientific Discovery? In the year 1600, gnats and fleas were the smallest creatures known, and plagues were still unexplained and unstoppable natural disasters. By 1900, many of the parasitic microbes responsible for our deadliest diseases had been found, identifie...
About me
I taught science to elementary and middle school students for many years, and I am currently developing and marketing educational materials. My main focus right now is on astronomy, but I hope to eventually market complete science curricula.
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