Zoom Meetings

CS50 occasionally holds live lectures and sections that anyone on the internet is welcome to attend or watch, whether taking any of CS50’s courses or not!

For any Zoom meeting you attend, please take care to

  • participate from a quiet office or similar space (and not from a bed, car, hammock, plane, or train), and
  • participate with your camera turned on, using horizontal (not vertical) video.

If unable to accommodate these norms some week, please watch the live stream or recording at youtube.com/cs50 instead.

Schedule

Lectures

Whether you are a CS50x student, a CS50 AP student, a prospective student, a teacher, a parent, or a Harvard alum (or anyone else!), you are cordially invited to watch any or all of Fall 2023’s lectures online or even attend in person at Harvard University in Cambridge, Massachusetts, USA. These lectures will become part of CS50x 2024 on edX, so watching or attending now offers a bit of a preview.

If registered to watch online, we’ll email you instructions for how to join the lecture (via Zoom or YouTube), at least an hour before each lecture. And we’ll also post links below.

Zoom Week Lecture Date YouTube
n/a Week 0 Scratch 2023-09-06T13:30:00-04:00/2023-09-06T16:15:00-04:00 Watch
n/a Week 1 C 2023-09-11T13:30:00-04:00/2023-09-11T16:15:00-04:00 Watch
n/a Week 2 Arrays 2023-09-18T13:30:00-04:00/2023-09-18T16:15:00-04:00 Watch
n/a Week 3 Algorithms 2023-09-25T13:30:00-04:00/2023-09-25T16:15:00-04:00 Watch
Launch Week 4 Memory 2023-10-02T13:30:00-04:00/2023-10-02T16:15:00-04:00 Watch
Launch Week 5 Data Structures 2023-10-11T13:30:00-04:00/2023-10-11T16:15:00-04:00 Watch
Launch Week 6 Python 2023-10-23T13:30:00-04:00/2023-10-23T16:15:00-04:00 Watch
Launch Week 7 SQL 2023-10-30T13:30:00-04:00/2023-10-30T16:15:00-04:00 Watch
Launch Family Weekend Artificial Intelligence 2023-11-03T12:00:00-04:00/2023-11-03T13:00:00-04:00 Watch
Launch Week 8 HTML, CSS, JavaScript 2023-11-06T13:30:00-05:00/2023-11-06T16:15:00-05:00 Watch
Launch Week 9 Flask 2023-11-13T13:30:00-05:00/2023-11-13T16:15:00-05:00 Watch
Launch Week 10 Emoji 2023-11-20T13:30:00-05:00/2023-11-20T16:15:00-05:00 Watch

Sections

To watch online, register at cs50.ly/watch.

If registered to watch online, we’ll email you instructions for how to join the section (via Zoom or YouTube), at least an hour before each section. And we’ll also post links below.

Zoom Week Section Date
n/a Week 0 Scratch 2023-09-06T13:30:00-04:00/2023-09-06T16:15:00-04:00
n/a Week 1 C 2023-09-11T13:30:00-04:00/2023-09-11T16:15:00-04:00
n/a Week 2 Arrays 2023-09-19T13:00:00-04:00/2023-09-19T14:30:00-04:00
n/a Week 3 Algorithms 2023-09-26T13:00:00-04:00/2023-09-26T14:30:00-04:00
Launch Week 4 Memory 2023-10-03T13:00:00-04:00/2023-10-03T14:30:00-04:00
n/a Week 5 Data Structures 2023-10-13T14:45:00-04:00/2023-10-13T16:00:00-04:00
Launch Week 6 Python 2023-10-24T13:00:00-04:00/2023-10-24T14:30:00-04:00
Launch Week 7 SQL 2023-10-31T13:00:00-04:00/2023-10-31T14:30:00-04:00
Launch Week 8 HTML, CSS, JavaScript 2023-11-07T13:00:00-05:00/2023-11-07T14:30:00-05:00
Launch Week 9 Flask 2023-11-14T13:00:00-05:00/2023-11-14T14:30:00-05:00