Design Day: Silent message relay
Inventors (Intermediate), mission I9 Signals & Remote Control, lesson 5 of 6.
Hook
Gizmo HQ has lost its radio. Agents must get the password across the hall!
Fair test
Test your prototype against every criterion. Change one thing, test again, and log each change.
Bonus challenge
Add an “error check” so the receiver can tell if a letter was wrong.