By actively engaging students in the learning process, drop-in services support Cal undergraduates in enhancing their understanding of science coursework. By collaborating with each other and peer tutors who have successfully completed the class, students clarify concepts, hone their problem-solving skills, and bolster their confidence with the material. We welcome any and all questions related to course lectures and texts, labs, homework problems, and practice exams. In drop-in, students will foster connections not only with science concepts, but with a supportive community in which they can thrive as learners.
Drop-in support is available for the following courses:
- Biology 1A/1AL
- Chemistry 1A/1AL, 3A/3AL, 3B/3BL, 32
- Molecular & Cell Biology 102
In partnership with the Departments of Astronomy and Physics, Drop-in support is also available for the following courses:
- Astronomy 7A, 7B
- Astronomy 121
- Astronomy 160
- Astronomy/Physics C161
- Physics 5A, 5B
- Physics 7A, 7B, 7C
- Physics 8A, 8B
- Physics 105
- Physics 110A
- Physics 111A, 111B
- Pysics 112
- Physics 137A
Please note that service offerings may vary by semester. Biology and Chemistry services are held in Cesár Chávez Student Center. Astronomy and Physics services are held in the locations listed on the schedule.
Fall 2023 services will begin the third week of instruction. General service hours in the academic year are as follows:
- Monday-Thursday, 12-4PM in Cesár Chávez Student Center
- Monday-Thursday, 5-7PM on Zoom
- Friday, 12-4PM on Zoom
To view course-specific service hours, please visit our weekly drop-in schedule. Note that service hours vary during Summer Session.
How to Visit Drop-in
Services are offered in-person on the second floor of Cesár Chávez Student Center and via Zoom. No prior sign-up is required!
To join us in-person:
- Visit the Science Drop-in Area located on the 2nd floor of the César Chávez Atrium.
- Complete the sign-in form (will be posted at the Drop-in Entrance and/or shared by the Program Ambassador).
A Program Ambassador to connect you with one of our friendly tutors.
To join us virtually:
- Log on to the Virtual Science Drop-in Area.
- Complete the drop-in sign-in form.
- A Program Ambassador will greet you and connect you with one of our tutors.
Drop-In Problem Sets
Click the following links to access drop-in problem sets: Bio 1A, Chem 1A, Chem 3A, Chem 3B, Chem 32, MCB 102, Physics 8A, Physics 8B. Problems are posted each week, and we encourage you to visit drop-in services to discuss your solutions with peers!