Jev opens up entirely new question types

A NEW WAY TO PRIORITIZE YOUR LEARNING When we first started, we did the standard: we put everyone through unit 1, then unit 2, then unit 3, etc. Many students didn’t like this because this meant very little variety in what they were learning, and it also isn’t optimal for knowledge retention. Then we added Interleaving, which would prioritize topics in a breadth-first-search type way. This worked fantastic when our knowledge graphs were relatively small. However, as our knowledge graphs grew, our interleaving algorithm started working less well. Students were getting served new lessons from all over the knowledge graph, in tons of different units, and it led to a less coherent experience. Then we added Focus Mode, which let you choose a target that you were aiming at, and only served you topics within the prerequisites chain. This was great, but many students don’t know about it, and also once you completed your goal it sent you right back to interleaving. Now we’ve added a nice middle ground, which provides the benefits of interleaving without the overwhelm that our initial implementation led to. LEARNING THREADS By default, you will be served lessons from the first 3 units of your course (or 2 from each course if you’re enrolled in multiple courses). When you finish a unit, that learning thread will switch over to the next available unit. This will work great for most students. If you want to customize the order you tackle content in, you can choose 1-3 threads per course. Learning threads can be units, or they can be aiming towards a specific topic. When you finish one, you’ll be given a chance to choose a new learning thread to replace it. With this change, the default experience should now be better - and power users will also have a greater degree of control over their experience.

Since this post: * New High School Chemistry unit * 2 new Conceptual Physics units * Step-by-step FRQs, with partial-credit/retries * “Explain my error” button * Integrated Jev into internal processes * Tons of smaller fixes, sanded edges, and small content improvements

Another set of performance improvements released 5 minutes ago. Thank you for your patience this morning.

"you won't need to learn multiplication because AI will be good at multiplication" is such a wild take The computers have been good at multiplication for decades

Designed to give LLM graders the data they crave. Hopefully should eliminate a couple frustrating edge cases that vision models struggled with!

We're going to keep finding more and more places to put the cheap intelligence. If only there was a term for this phenomenon

🚨🚨 New release! 🚨🚨 High School Chemistry, Unit 8: Acids and Bases This also doubles as the first half of the AP Chemistry Acids and Bases unit, which we will complete later this fall.

Internal tools getting a boost

What are you learning today?

By the way, all of the partially completed courses - you can start them right now. Only the most dedicated will run out of lessons before we finish the courses.