Rule Lab: sort three paper tokens

This original offline tool uses fictional labels. Choose the visible blocks, press Run, then change one block and run again. It saves and sends no data. A paper trace is useful practice; an actual run shows what your visual program did.

My visual program

REPEAT for each of the three input tokens, in order.

IF the token label equalsTHEN send to

ELSE send to

STOP after token three. Say whether the output met your rule.

Input sequence

Token 1 Token 2 Token 3

Result and trace

Choose the blocks and run the program.

Step	Input	Comparison	Output
No run yet.

Accessible route: all controls work with keyboard and have text labels. If a device is unavailable, use the paper branch mat and mark the work UNPLUGGED. No child account, camera, microphone, network request or local storage is used. Teacher reviews what the learner changed and explained.

Original tool and wording © NeuroForgeIO Pty Ltd 2026, CC BY 4.0. Credit SubjectNest, link the source and licence, and indicate changes. Program code is Apache-2.0. No ACARA endorsement.