Hands-on learning, not just video.
Interactive, sandboxed code environments where learners run exercises and get instant feedback — embedded directly into your courses.
Built for active learning.
The fastest path from passive video to learners actually doing the thing.
Python, JavaScript, TypeScript, SQL, Go, and more — pick the runtime that fits your lesson.
No setup. Learners write, run, and iterate without leaving the lesson.
Isolated execution so user code can never touch your platform or other learners.
Define test cases, expected outputs, or AI rubrics — grade thousands of submissions instantly.
Bootstrap exercises with starter files, hidden tests, and reference solutions.
Drop a playground into a course lesson, board, or standalone page.
Start teaching today.
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Free forever on the Free plan.