Smart Book Marking
Mark a printed puzzle from a phone or laptop.
Scan a puzzle QR code to load the matching problem, type the answer into the boxes, or upload a clear photo of the page. The marker checks the numbers, the operators, and the final target.
How to use it
- Scan a QR code to open the matching puzzle.
- Enter the boxes manually or upload a page photo.
- Review the checked answer and the canonical solution.
Once loaded, this page works offline.
Current Puzzle
Scan a QR code or load the demo to get started.
Student Correction Sheet
Photo Upload
Upload a photo to auto-fill the boxes, or type them in directly.
A clear, well-lit photo works best. Keep the whole page in frame with all four corner markers visible so the page can be straightened before the answer boxes are read.