ST1: Lesson 2 Volcano Monitoring System

Designing safer systems when every second counts.

This KS3 / lower secondary computing lesson asks students to step into the role of system designers. They explore how seismic, thermal, and pressure data trigger binary states, how the logic gates process those signals, and how the system decides whether to send a real-time alert. Learners engage with sensor readings, logic circuits, and system diagrams to model which configurations provide faster, safer responses under pressure.

This lesson builds on ST1_1 by moving from basic input and output identification into real-world binary decision-making, where threshold rules and logic circuits determine whether life-saving alerts are triggered.

Through this, students uncover:

• How input sensors are converted into digital danger signals
• What the logic gates do in controlling system decisions
• How binary values determine real-time safety responses
• The concept of threshold-based logic in automated systems
• Why system sensitivity and false alarms matter in emergency technology

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