The conversational source material for introductory statistics and calculus
What if students actually completed assigned readings?
It's no secret that undergraduates rarely complete required readings, making courses much harder to teach. With AI, this problem is only getting worse. Students now use basic LLM chatbots as a crutch for learning: cutting corners on content—or cheating entirely—rather than developing subject mastery.
The first platform with off-the-charts efficacy and engagement
Phosphor is a new kind of learning platform that adapts conventional course texts into a conversational format. With Phosphor, students were 4-6x more likely to engage with course readings—with full dosage associated with an 8.0-14.7 percentage point grade increase on the final exam. Read the paper...
From our peer-reviewed study
Stop grading AI-generated homework submissions
ChatGPT has moved us past the age of take-home homework assignments. With our state-of-the-art formative assessment engine, students get instant feedback and unlimited practice for every learning objective. Progress is synced directly to your LMS!
Get deep insights into student progress
Students have replaced office hours with general-purpose AI, and gaps only surface in withdrawal rates and test performance. Phosphor illuminates detailed per-student mastery and displays the topics students struggle with the most.
Granular control over everything students see
Create your perfectly tailored source text in minutes, adding and omitting topics to your heart's content. Embed videos, interactives, animations, and more. Adjust your curriculum as needed throughout the semester, with changes synced in real-time.
Take it from the real students who use Phosphor daily.
“I think it's incredible. It's been super helpful in this class. It's a lot more engaging and accessible to me than reading a textbook, it's been super informative and helped me master the material... the quizzes are great, the information is great, and it helped me do well on my first test. I'm very grateful for Phosphor.”
“[Learn Mode] is a great idea... This is how I study on my own with AI, so it's nice to have a platform where all the features are consolidated and consistent. If I had this in every class I'd be much more motivated to learn.
When using external AI to study, it wants to please you more than it wants to teach you. Sometimes it'll trick me into thinking I'm correct. Having a real structured learning system like this makes it about grasping the material than simply talking about it.”
“Definitely the best reading experience I've ever had.”