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My name is Mark Rosengarten. Many of you may know me as that crazy chemistry teacher who has all those great videos on YouTube, chemistry songs and the host of Regents Review 2.0. There's more to the story than just a crazy chemistry teacher. I also enjoy chasing storms and doing nature photography! Come on in and explore my brain! You'll find it an interesting place to hang out.
NOW AVAILABLE!!!!
Purchase the Chemistry Classics Collection DVD!
ALL OF MY LESSONS ARE AVAILABLE ON YOUTUBE!!


Regents and Honors Chemistry Packets and Answer Keys! Get them here!!!
A/E Chem Tutorial Videos
R Chem Tutorial Videos