After 9.40
Gateway: 9.40
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 9 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 9 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 76 9 and feeder courses that have prerequisite links. 59 more 9 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: 9.40
Gateway: 6.3000
Gateway: 2.005
The deepest prerequisite chains in 9. These are the routes that take the most semesters to climb.
4 courses deep, ending at 9.021
4 courses deep, ending at 9.110
4 courses deep, ending at 9.19
3 courses deep, ending at 9.175
All 9 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 9 yet.
No clubs or organizations on record under 9 yet.
This shows once five students share their club memberships.
9 does not run a page here yet. When it does, its events show up here and on the MIT campus feed.