Cassandra G. Extavour, Professor of Organismic and Evolutionary Biology and of Molecular and Cellular Biology, is one of six co-instructors for LIFESCI 50(A & B) Integrated Science, an intensive two-semester course created by Andrew Murray, Herschel Smith Professor of Molecular Genetics, covering methods and concepts from biology, chemistry, physics, and mathematics. They design class discussion and assignments as problems that require students to rely on one another to solve. "We let them know it's normal to not be able to answer everythingon the problem sets on their own. We've structured them that way. They learn to engage with classmates, or with us, to work it out."