✦ A quick word before your ride
This classroom dice roller gives teachers a fast six-sided result backed by browser cryptography rather than animation timing. It supports keyboard controls, reduced-motion devices, physical material sounds, and a visible audit history. Each roll records its committed faces and SHA-256 digest so students can inspect the evidence behind a displayed outcome.
✦ Midway game · proof included
Classroom Dice Roller
A keyboard-accessible classroom die with reduced-motion support and visible fairness evidence.
✦ Proof booth
Fairness & entropy audit
Each proof commits the entries, weights, random bytes, result, timestamp, nonce, and previous proof digest. Recomputing SHA-256 detects later changes; it does not prove that a dishonest host committed the inputs before drawing.
- Normalized entropy
- 0.00%
- Entropy
- 0.000 bits
- Chi-square
- 0.000
- p-value
- 1.0000
- Verified draws
- 0
Observed result frequency
3 degrees of freedomThe sample is too small for a reliable chi-square interpretation (expected count below 5).
Recent proof hashes
Your first result will appear here with its SHA-256 verification digest.
How to use Classroom Dice Roller
- 1. Choose a sound material.
- 2. Roll the six-sided die.
- 3. Use the audit panel to discuss probability and sample size.
Frequently asked questions
Does it support reduced motion?
Yes. The result-only view replaces 3D motion when the operating system requests reduced motion.