MIT OpenCourseWare

Chalk Radio Podcast Welcome to Chalk Radio, a podcast about inspired teaching at MIT. Subscribe here → https://chalk-radio.simplecast.com/ In each episode of this new podcast, w...

🎧 Happy #InternationalPodcastDay!

On OpenCourseWare's podcast, Chalk Radio, we meet the instructors behind MIT’s most interesting courses! Check it out on YouTube or wherever you get your podcasts. https://bit.ly/470Xxhn

YouTube video by J-PAL DEDP MicroMasters | Why Choose the Data, Economics, and Design of Policy MicroMasters Program?

Looking to advance your career in development economics or public policy? The DEDP MicroMasters offers flexible online courses taught by MIT faculty, including our co-founders Abhijit Banerjee and Esther Duflo. Enroll now to join this semester: https://bit.ly/4gkbCd7

https://bit.ly/3VLkUFn

CS50 is back in the United Kingdom! Join us at Meta in London on Friday, October 10, 2025, for a CS50x Puzzle Day with Oxford Lifelong Learning, University of Oxford.

A Ministry of Presence An experience of collective pain does not deliver us from grief or sadness; it is a ministry of presence. These moments remind us that we are not alone in our darkness and that our broken heart is con...

For many years when teaching American Government to undergrads, I started the semester by reading Brene' Brown's chapter, "People are Hard to Hate Close Up. Move In." We need that lesson now more than ever. Here's an excerpt. brenebrown.com/articles/201...

OpenArchive Explore the research, development, and deployment processes that we and Hypha Co-Operative used to co-create the first secure, decentralized mobile media storage backend.

🚨Publication alert! Learn about the first decentralized, p2p mobile backend we built w/ @hypha.coop in our white paper.

Why?

🌍Distributed Storage.
🤝Community-Run: by us, for us.
🧱Redundancy, by design.
🫶🏼More autonomy & integrity.
🙏w/ the support of @ffdweb.org
www.open-archive.org/news/oa-hyph...

Live from Harvard University at 1:30pm EDT, this is Week 3 of CS50 on algorithms. Open to anyone online. (Or attend in person some day, per cs50.ly/attend.)

Watch on YouTube at youtube.com/live/4eN3_kb....

Register for Zoom at cs50.zoom.us/meeting/regi....

A person sits outside on a bench overlooking calm, reflective water as they flip through the pages of an open book in their hands. Headline reads: Because the possibilities are wide open.

This fall, reach for new possibilities with 2026 certificates from OEN:

CERTIFICATE in OPEN PEDAGOGY
Create student-centered curriculum w/ open pedagogy.
z.umn.edu/OpenPedCert

CERTIFICATE in OPEN EDUCATION LIBRARIANSHIP
Build your action plan to grow open education.
z.umn.edu/OpenEdLibrar...

⏰ Launching today! Interested in building your evaluation toolkit? Enroll in J-PAL’s free, self-paced Evaluating Social Programs online course on @MITxCourses to learn how to measure social impact. 🔗 Link: https://bit.ly/3VHBfLa

Professor Jon Gruber explains how companies use product differentiation - such as in the breakfast cereal industry - to maintain profitability in highly competitive markets, in this segment from lecture 14 of Principles of Microeconomics. #Competition ... “Why so many cereals?" - The economics of competition

What is your favorite breakfast cereal? Comment in the chat below. 👇

In this video, MIT Economist Jon Gruber explains product differentiation, enabling companies to maintain profitability in competitive markets, such as the breakfast cereal industry. Watch on YouTube: https://bit.ly/3IvsYqS

More than 12.7k ways to learn online from MIT Explore non-degree learning opportunities from the QS top-ranked university for 2025–26.

Anyone, anywhere can explore more than 12.7k educational resources from the Institute’s top-ranked departments — 98% of the content is FREE. Simply visit learn.mit.edu.

Read the blog post on Medium to kickstart your learning with a curated list of courses: https://bit.ly/46CNTl0

MIT Economist Explains the NFL's Legal Cartel Economist Jonathan Gruber explains how the NFL operates as a legal cartel--selling national broadcast rights as a single entity, limiting competition, and dri...

Are you ready for some football?

MIT Economist Jonathan Gruber explains how the NFL operates as a legal cartel—selling national broadcast rights as a single entity, limiting competition, and driving up costs for viewers. https://bit.ly/46CPXtd

Happy Perfect Square Day!

Today, 09/16/25, consists of 3 perfect squares in its month, day, and year, as well as consecutive square roots (3², 4², 5²).

2025 also marks a perfect square year, 45², and is the sum of the cubes of all single-digit numbers: 1³ + 2³ + 3³ + 4³ + 5³ + 6³ + 7³ + 8³ + 9³.

Lecture 1: Introduction to Real Numbers MIT 18.100B Real Analysis, Spring 2025Instructor: Tobias Holck ColdingView the complete course: https://ocw.mit.edu/courses/18-100b-real-analysis-spring-2025...

📢 New Course Alert! Dive deep into the foundations of mathematics with our latest OCW offering: Real Analysis!

Bonus: The course includes lecture videos from MIT Mathematics professor Tobias Holck Colding—perfect for independent learners.

Start learning today: https://bit.ly/4ggC6vO

The first one of these starts in two hours, and the second is Friday afternoon

Photo of a person reaching up to open window curtains, letting sunlight stream into the room. Headline reads, "Because the possibilities are wide open."

This fall, 🍁 reach for new possibilities with 2026 certificates from the OEN:

CERTIFICATE in OPEN PEDAGOGY
Create student-centered curriculum w/ open pedagogy.
z.umn.edu/OpenPedCert

CERTIFICATE in OPEN EDUCATION LIBRARIANSHIP
Build your action plan to grow open education.
z.umn.edu/OpenEdLibrar...

Lightning strikes near a house under a stormy sky with a visible rainbow to the right, taken by Tatiana Gerus on Flickr.

We have a new course on the horizon. It's called "Dynamics of the Atmosphere" from @eapsmit.bsky.social. Meant for graduate students, it includes lecture notes, readings, problem sets, and a project. https://bit.ly/45MWOQB

(Image by Tatters on flickr. CC BY-NC-SA).

We’re excited to share that our brand-new Middle School Chemistry and Middle School Physics courses are here! 🎉

These engaging, standards-aligned lessons challenge students to explore real-world phenomena and apply scientific thinking as they discover how the physical world works.

Photo of a child flying a kite in an open field with an expansive, blue sky above. Headline reads: Because the possibilities are wide open.

This fall, reach for new possibilities with 2026 certificates from the OEN:

CERTIFICATE in OPEN PEDAGOGY
Create student-centered curriculum w/ open pedagogy.
z.umn.edu/OpenPedCert

CERTIFICATE in OPEN EDUCATION LIBRARIANSHIP
Build your action plan to grow open education.
z.umn.edu/OpenEdLibrar...

Promotional image for MITx featuring a person wearing an MIT shirt sitting and smiling, with text stating "Back to School - Save 30% off all course upgrades."

Heading #BackToSchool or learning a new skill online? Upgrade to save 30% off any MITx course – now through September 10. Use the codes:

🧠 SKILLSMITX25 on MITx Online
✍️ SKILLSEDX25 on edX

Learn with MITx for free or pay to join the certificate track. Explore our course catalog: bit.ly/4kxQXT7

Hello, world! CS50's lectures in Sanders Theatre at Harvard University are open to the public, September 2025 – November 2025. Fall 2025's lectures will become part of CS50x 2026 on edX.

To attend in person, visit cs50.ly/attend.

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

Schedule ↓

Open Textbook Author Profile: Melissa Chim - Open Education Network Blog Past Makes Perfect: A Mini Handbook for Student Historians is an openly licensed textbook written and published in 2025 by Melissa Chim, Scholarly Communications Librarian at Excelsior University in A...

Past Makes Perfect: A Mini Handbook for Student Historians is a new open textbook by Melissa Chim of Excelsior University. The history scholar participated in OEN’s Ketty Pilot, which helped her reach her goal in 2025. Catch her publishing insight & comments on the Ketty experience: z.umn.edu/amnn

Image of a wide open field of yellow flowers. In the foreground, a pair of yellow sneakers are visible as someone puts their feet up. The headline above reads: Because the possibilities are wide open.

This fall, reach for new possibilities with either of these certificates from the OEN:

CERTIFICATE in OPEN PEDAGOGY
Create student-centered curriculum w/ open ped.
z.umn.edu/OpenPedCert

CERTIFICATE in OPEN EDUCATION LIBRARIANSHIP
Build your action plan to grow open ed.
z.umn.edu/OpenEdLibrar...

BioNook Online Biology Resources | Biology | MIT OpenCourseWare BioNook is Whitehead Institute's online biology resource, offering exciting learning enrichment for students, parents and teachers. Find videos, podcasts and stories on Whitehead Institute Science, as...

Did you know that BioNook, Whitehead Institute's online resource for science education, is on MIT OpenCourseWare? Come see what BioNook has to offer, along with the rest of @mitocw.bsky.social's catalogue of materials. ocw.mit.edu/courses/res-...

An invaluable resource for everything: From public speaking to the human brain High school student Sangat Tiwari found MIT OpenCourseWare at Open Learning in 8th grade and hasn’t looked back.

MIT Open Learning’s OpenCourseWare resources have been part of Sangat Tiwari’s life since he was in 8th grade.

Learn more about Sangat's story https://bit.ly/4mLju9c

Musicians in formal attire performing in an orchestra, viewed from above, with a focus on violinists and sheet music stands.

📢 New course alert ➡️ Introduction to Western Music from the MIT Music & Theater Arts program.

Take a deep dive into the core canon of Western classical music. This is not to be missed! https://bit.ly/4mgu6x8

Photo by Samuel Sianipar on Unsplash

Neon text that says, "Better Together"

When Linux Dominicana reached out to MIT OpenCourseWare, their request was simple: “How might OCW and Linux Dominicana collaborate?”

This idea blossomed into a full-fledged partnership between our two organizations Read the full story on our blog: bit.ly/45J7775

The universities are indoctrinating students!

Actual universities:

One of the things my team owns that I'm VERY proud of is @vscode.dev *for Education.* We just released our authoring tool so you (educator or not) can publish your own courses and lessons AND they'll be saved to your GitHub! Learn more, and please share with educators! vscodeedu.com/whats-new/2326

Romanesco broccoli close-up showing its natural fractal patterns and vibrant green color, set against a dark background.

Happy World Nature Conservation Day!

Protecting the Earth is not optional, so let's learn as much as we can! Explore our list of Environment & Sustainability courses on OpenCourseWare. bit.ly/43NpwOd 🌍

Image by Jon Sullivan, Public domain, via Wikimedia Commons.

Teaching humanities this year? We’ve got your back.
Whether you’re covering U.S. History, Civics, or Art History, Khan Academy has free resources that fit right into your classroom routines—with the flexibility and support real teachers need.