Dr. Roizen has contributed videos focused on epoxidation to Ch 201: Organic Chemistry I.

The first video in the series is embedded below. The lightboard videos in the following series have been filmed and edited by J. Brandon Johnson with support from the Online Courses Program at Duke. These videos are housed in warpwire, which functions well for the P.I. in Safari.



Dr. Roizen has taught Chem 202L-002: Organic Chemistry II. This is an undergraduate course.

In the Spring of 2015, class members competed with students in Professor Byers' class at Boston College. Drs. Roizen and Byers quized each others classes by skyping in approximately once per week. Here are a pair of sample multiple choice questions, used as part of this collaboration.

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View more extensive sampling of multiple choice questions...




Organic chemistry reactions do not have to happen in a laboratory with expensive equipment to be interesting and complex. In the Spring of 2015 and 2016, organic chemistry students created procedural videos and worksheets to bridge their real world experiences with class content. They use easily found household items to see the principles of chemistry in action.

This video shows an experiment where the students make turmeric extracts change from yellow to red. If you'd like to test your understanding of the chemical basis for this video, try your hand at the worksheet. If you find yourself needing help, the answers are provided, as is a detailed procedural description. To decide whether you want to explore these resources, check out the listed learning objectives. These worksheets target organic chemistry students, and are optimized for use by small groups of students in a classroom.

Relevant learning objectives.
* Explain how UV/Vis spectroscopy provides evidence that increasing conjugation of a π-system results in a decrease in the HOMO / LUMO gap for that system.
* Relate UV/Vis spectroscopy to visual perception.
* Explain why the α-protons to carbonyls are acidic, and how this property leads to enolate formation, and racemization and epimerization of α-stereogenic centers
* Explain phenol reactivity, with particular attention to phenol acidity.
* Draw detailed arrow-pushing mechanisms for retro-aldol reactions.

View more extensive sampling of videos...



Dr. Roizen has taught Ch 532: Organic Reactions. This is a graduate-level course involving a partially-flipped classroom.

The following photos were taken during in-class think-pair-share exercises.

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Dr. Roizen is interested in the Organic Pedagogical Electronic Network, which is a community forum for organic chemistry instruction.