After 6.100B
Gateway: 6.100B
Building the department map…
Department paths
Courses with no prerequisites inside the department that unlock the most downstream work.
The shortest canonical route from each entry point to a gateway course.
Generated from Massachusetts Institute of Technology’s catalog, prerequisite, and concentration data. Spotted an error? Departments can adjust labels, ordering, and notes without a code change, so contact us.
Each of these unlocks the largest share of downstream work on this map. Courses from other departments can appear here when they genuinely gate 20 coursework.
Intro tiers at the top, advanced work below; arrows point from a prerequisite to the course it unlocks. Courses from other departments appear where they gate 20 work. Click any course to see what it requires and unlocks without leaving this page; hovering lights up its neighbors. The lists on this page carry the same courses in text form.
Showing the 69 20 and feeder courses that have prerequisite links. 55 more 20 courses have no recorded prerequisites. They are listed under Tracks below, not drawn as loose dots here.
Upper-level clusters, grouped by the gateway that opens them.
Gateway: 6.100B
Gateway: 7.05
Gateway: 7.06
Gateway: 2.005
The deepest prerequisite chains in 20. These are the routes that take the most semesters to climb.
6 courses deep, ending at 20.450
5 courses deep, ending at 20.381
4 courses deep, ending at 20.215
4 courses deep, ending at 20.335
All 20 courses in the MIT catalog
Grade medians are for verified students. Sign in with your school email to see them.
Use your school emailNo section schedule with instructor names for 20 yet.
No clubs or organizations on record under 20 yet.
This shows once five students share their club memberships.
20 does not run a page here yet. When it does, its events show up here and on the MIT campus feed.