Ananya wrote the code in Arduino IDE and a companion mobile app in MIT App Inventor. She created conditional loops ( if motion detected, then send alert ), variables for temperature readings, and a function to make CHIRP say “Greetings, human!” when someone came near.

“I know that!” Rohan snapped. “But how do I fix it without losing my project?”

The school auditorium buzzed with projects. On one side, a group displayed a 3D-printed pen stand. On another, a simple quiz game in Scratch.

Chapter 4: The Tech Fair