OPERATION ZERO TRACE β Digital Escape Room (Signed Integers: Add, Subtract, Multiply, Divide) Grade 7 Β· No-Prep Β· Single File Β· Works on all devices including Chromebooks π» THE MISSION: Students play as rogue hacker agents recruited by Dr. Elena Voss β a climate researcher whose data was stolen by a shadow organisation called the CIPHER BUREAU. Armed with an AI assistant named ARIA and a working terminal, students must breach five servers using their knowledge of signed integer arithmetic. Ever