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(DEMO) Principles of Economics (Microeconomics)
Spring 2022
Economists study human behavior using a combination of models and data. Ec 10a introduces students to economic models by using intuitive discussions, graphical analysis, and, in some cases, very basic algebra. The models study individual decision-making and markets, and range from classical approaches like supply and demand to more recent approaches that consider informational limitations and behavioral mistakes. We will also use data to understand the strengths and weaknesses of these models. The course also discusses the role that ethics and values play in people's choices and in policy discussions, including an understanding and critique of approaches like utilitarianism and libertarianism. The goal of the course is to provide students with a set of tools that will help them develop answers for themselves on how to make better choices and participate in debates on major public policy issues in areas including tax policy, inequality, discrimination and racial justice, the environment, and the economic problems associated with the COVID crisis.
(DEMO) Introduction to Computer Science
Fall 2021
Introduction to the intellectual enterprises of computer science and the art of programming. This course teaches students how to think algorithmically and solve problems efficiently. Topics include abstraction, algorithms, data structures, encapsulation, resource management, security, software engineering, and web programming. Languages include C, Python, and SQL plus HTML, CSS, and JavaScript. Problem sets inspired by the arts, humanities, social sciences, and sciences. Course culminates in a final project. Designed for concentrators and non-concentrators alike, with or without prior programming experience. Two thirds of CS50 students have never taken CS before.
(DEMO) An Integrated Introduction to the Life Sciences: Chemistry, Molecular Biology, and Cell Biology
Fall 2021
What are the fundamental features of living systems? What are the molecules imparting them and how do their chemical properties explain their biological roles? The answers form a basis for understanding the molecules of life, the cell, diseases, and medicines. In contrast with traditional presentations of relevant scientific disciplines in separate courses, we take an integrated approach, presenting chemistry, molecular biology, biochemistry, and cell biology framed within central problems such as the biology of viral infections.