Teach STEM, not just show it

Not as a code editor with an execution environment — Interakly does not run student code. What it does have is the interactive lab: a sandboxed HTML and JavaScript mini-app you place inside a lesson, which students manipulate directly. It is good for showing how something behaves; it is not a substitute for an IDE or an autograder.

You set the correct answer and a tolerance, and the tolerance is an accepted range rather than a proximity score — every value inside it earns full credit. Grading happens on the server when the student submits, so the answer key never reaches the browser.

There is no equation editor or LaTeX rendering. In practice teachers put the notation in an image — which can then carry hotspots, labels and zoom — and ask for the result as a numeric answer with a tolerance.

Two ways. Label Image asks students to place every authored label on the right part of the picture, and it is graded automatically. For anything freehand — a free-body diagram, a mechanism sketch — Drawing Submit collects it for you to mark in the review inbox.

Yes. You can add compatible timestamped interactions to supported public or unlisted YouTube videos that allow embedding. Spatial interactions such as hotspots need an addressable frame, so upload your own MP4 when you want those or owned-media captions.

Yes — every feature is free during early access. Unlimited video uploads, up to 40 minutes each. No credit card required, no expiration.