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Introducing Koji, the world's first graphical tutor. 0:00 /0:10 1× Private tutoring has been the most effective form of instruction for millennia, but it has been reserved for an elite few. We built Koji for everyone else.
Imagine you’re solving a momentum puzzle in our Scientific Thinking course.You line up the shot, position the cue ball at the perfect angle, and... the eight ball stops just short of the pocket. You adjust and try again. Same result. Third attempt. You stop, reason through it,
Falling into the pit and dying, but for mathIn Super Mario Bros, you don’t get a text box saying “You pressed the jump button too early.” You fall into the pit and die. You learn to wait just a little longer before jumping, and clear
The hottest programming language of 2025 is: English?It turns out that, with LLM assistants like ChatGPT and Claude, even novices are able to build their own tools, websites, and apps. They’ll write a lot of the code for you.However, LLM coding assistants still work best when
“It is better to solve one problem five different ways than to solve five problems one way.” — George PólyaOne of the joys of math is that there is never just one way to solve a problem. The same problem may be solvable with a
We all want to make smarter use of our screentime. But when it comes to deciding between crushing candy or doing something actually useful for ourselves—sorry, brain—candy wins. However, we took that as a challenge: how do we make solving for x as much of a
Today’s technology is designed to feel intuitive and approachable. Yet most coding courses seem designed to feel the opposite, a frustrating maze of unfamiliar lingo and syntax errors. What if learning to write programs was as fun as a mobile game, and your first coding language was plain
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