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Free Browser Tutor for Schools & Clubs

A classroom-ready
teaching assistant for every student.

CubeUnstuck acts like an extra pair of hands. It scans each student's physical cube and guides them step-by-step with voice and 3D animations—so you can focus on teaching STEM, not untangling 30 different scrambles.

No student accounts, logins, or ads. 100% Privacy safe.
Runs instantly in the browser on Chromebooks and iPads.
Scanning the Rubik's cube with camera3D digital twin generated instantlyVisual arrow explains the next moveVisual arrow guiding the next move
25 Kids. 25 Scrambles.

Why traditional cube lessons fail in a room of 30 kids

Varying Paces

If you project a video on the board, half the class gets left behind in minutes, and the other half gets bored waiting.

Abstract Notation

Handing out worksheets with "R U R' U'" feels like a chore. Kids struggle to translate written letters into physical 3D movements.

The "One Mistake" Bottleneck

A student messes up on step 6. They raise their hand. Now you have to manually figure out where they went wrong or make them restart entirely.

Built for learning.
Designed for classrooms.

The "Sandwich" Teaching Method

We don't just dump moves. We pause to highlight pieces (Observation), animate the 3D turn (Action), and show why it worked (Confirmation).

Shareable State Links

Want the whole class to practice a specific algorithm? Set up the cube digitally, copy the URL, and send it to your students. They open the exact same virtual state.

Impossible State Diagnosis

Kids drop cubes. If a corner pops out and is put back backward, the cube becomes mathematically impossible. We detect this instantly and show you which piece to twist physically.

Independent Recovery

If a student gets lost or turns the wrong layer, you don't need to walk over. They just re-scan their cube. The app adapts and finds the new path to the finish line.

Fosters Growth Mindset

How to run a lesson with CubeUnstuck

No software installation required. Ready in 5 minutes.

1

Students scan their unique scrambles

Have students open the link on their Chromebooks or iPads. They use the webcam to scan their own cube, allowing you to manage 30 different scrambles at once.

2

Automatic Diagnostics

Cubes get dropped in class. The digital twin instantly detects 'impossible states' (like twisted corners) so students don't spend 20 minutes on an unsolvable puzzle.

3

Self-paced solving

The app dictates the solution with 3D arrows. Students work independently at their own pace, freeing you to circulate the room and discuss the spatial reasoning behind the math.

Loved by educators

Sarah M.

Sarah M.

Middle School STEM Teacher

"I always wanted to do a Rubik's unit, but couldn't manage 25 kids getting stuck at different steps. This app completely solved that problem. It's brilliant."

David L.

David L.

Math Specialist

"The fact that I don't need to ask IT to install an app or create student accounts is huge. We just open Chromebooks, go to the URL, and start learning."

Jessica T.

Jessica T.

After-School Club Sponsor

"When a kid drops their cube and puts a piece back in backward, the 'impossible state' warning saves me from 20 minutes of trying to solve an unsolvable puzzle."

Common Educator Questions

Is it privacy compliant (FERPA/COPPA)?

Yes. The app requires no accounts, no student names, and no emails. We do not save or record video feeds from the webcam; the camera is only used locally in the browser to detect colors.

Do I need to be an expert solver?

Not at all. The digital tutor does the heavy lifting of calculating algorithms and giving directions. Your role is to encourage persistence and discuss the spatial concepts.

How long does a first lesson take?

Depending on the age group, expect a full solve to take 30 to 45 minutes the first time. The app teaches the standard Layer-by-Layer (LBL) method, making it easy to break into multi-day sessions.

What type of cubes work best?

Any standard 3x3 puzzle cube works. For the easiest webcam scanning under harsh classroom fluorescents, classic cubes with black plastic borders around the colored stickers yield the best results. (Fully compatible with the Rubik's® brand).