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ONEXYS for Economics

The Economics and Mathematics Departments, and the Center for Teaching and Learning are offering an online program in Summer 2024 to provide help to rising sophomores, juniors and seniors who are planning to enroll in ECON 121 in the coming academic year and want to brush up on their math. This program is led by Evangelia Chalioti, Senior Lecturer in Economics, and John HallIan Adelstein, and Robert McDonald, Senior Lecturers in Mathematics. It is modeled after the ONEXYS (Online EXperiences for Yale Scholars) program (, which provides first-year students with structured online math training and leads to significant student learning gains.

What is ONEXYS for Economics?

ONEXYS for Economics is aimed at current Yale students planning to take ECON 121 in Fall 2024 or Spring 2025. Over the summer, participants in this program will receive access to online content, including videos, real-time discussions with other students in the program, advice and mentoring from math- and economics-savvy Yale students who serve as coaches, and a variety of problem sets, quizzes, and other assessments to help them enhance their mathematics skills in preparation for Intermediate Microeconomics. They will also get the chance to learn from Yalies who have already been through Econ 121 at Yale, and learn how to develop study strategies for success (e.g., working in groups, asking questions, seeking help).

The program will run for 6 weeks from late June through early August and will involve between 5 and 10 hours of work per week for participating students. Students can participate from anywhere in the world, so long as they have a reliable internet connection. The program is free, and participants’ performance in the course will not affect their GPA in any way. 

Students who may be interested in ONEXYS for Economics should register their interest via the link below:

ONEXYS for Economics Survey

Interested students will be contacted to take an online diagnostic before admission into the program in order to ensure a proper match between the program and students' mathematics skills.

For questions, please contact Evangelia Chalioti, Director of the ONEXYS for Economics, at