🚨 Activity 4/5 – Cluster 3: Sensor-Based Robotics Systems
✔ No hardware required — uses the free Microsoft MakeCode simulator
✔ No prior coding experience required
✔ Step-by-step guided lesson
✔ Designed for classroom success

💡 Robot Multi-Sensor Decision System | Micro:bit Coding Activity | Sensor-Based Robotics | STEM Lesson (Grades 4–7)
🌟 ADVANCED SENSOR-BASED ROBOTICS ACTIVITY – PART OF THE SMART ROBOT INNOVATORS SERIES

In this engaging micro:bit coding activity, students take the next step in robotics by learning how robots combine multiple inputs to make decisions.

Using the Microsoft MakeCode micro:bit simulator, students program a robot that:
👉 detects multiple inputs (tilt + button press)
👉 combines conditions using logic (AND)
👉 makes decisions using structured logic
👉 responds with different outputs based on input combinations

Instead of reacting to a single input, students build a decision-making system, where the robot evaluates multiple conditions before responding — just like real-world smart systems.

💡 Example system:
• Tilt left + Button A → ⚠️ Warning signal
• Tilt right + Button B → 💎 Special signal

Through this hands-on STEM lesson, students discover that:
👉 Real robots don’t just react — they decide based on multiple inputs

💡 This lesson introduces a key robotics concept:
👉 Robots use multi-sensor decision systems based on Input → Processing → Output

Students progress from:
👉 sensing → reacting → combining inputs → making decisions

🚀 What Students Learn
Students will learn how to:
✔ Understand how robots use multiple sensors together
✔ Combine inputs using AND logic
✔ Program a robot using nested conditions (if / else if)
✔ Create a decision-based system with multiple outcomes
✔ Design clear and meaningful outputs for different conditions
✔ Control system behavior using timing (pause)
✔ Connect multi-sensor systems to real-world applications

🧠 Robotics & Computer Science Concepts Introduced
This lesson builds essential robotics and coding skills, including:

• multi-sensor input systems
• combined conditions (AND logic)
• nested decision-making (if / else if)
• continuous systems (forever loop)
• decision-based programming
• LED output design (icons & patterns)
• system timing and responsiveness
• debugging multi-condition systems
• input → processing → output system design

📦 What’s Included
This resource is a complete, ready-to-teach robotics lesson system designed for real classroom use.

👩‍🏫 Teacher Guide

✔ Activity Overview, Learning Objectives & Instructional Value
✔ Materials & Step-by-Step Teaching Flow
✔ Lesson Preparation & Implementation Guide
✔ Classroom Differentiation & Evaluation Strategies

🤖 Student Robotics Coding Activity

A structured, step-by-step learning progression:

✔ Part 1 — Understanding Multi-Sensor Robotics Systems
✔ Part 2 — Building a Multi-Sensor Decision System
✔ Part 3 — Understanding Programming Concepts
✔ Part 4 — Developing Robot Coding Logic
✔ Part 5 — Creative Coding Challenges (3 Differentiated Levels)
✔ Part 6 — Debugging & Problem Solving
✔ Part 7 — Reflection: Real-World Multi-Sensor Systems

📝 Assessment & Extension

✔ Student Exploration Worksheet (15 questions)
✔ Complete Answer Key
✔ Reflection + real-world connections
✔ Extension challenges for advanced learners

⏱ Activity Details
Grade Level: Grades 4–7
Duration: 30–45 minutes
Technology: Computer or Chromebook with internet access
Platform: Microsoft MakeCode micro:bit simulator
Hardware Required: None

🎯 Perfect For
• STEM lessons and activities
• Robotics units
• Computer science classes
• Coding for beginners (Grades 4–7)
• Coding clubs and technology centers
• Homeschool STEM curriculum
• Substitute-ready lessons

🧠 Skills Developed
• Computational thinking
• Logical decision-making
• Debugging and problem solving
• Systems thinking
• Multi-condition reasoning
• Designing decision-based systems
• Real-world robotics application

📚 Standards Alignment
This activity aligns with introductory computer science standards, including:
CSTA
• 1B-AP-08
• 1B-AP-10

🧩 Part of a Complete Sensor-Based Robotics System (5-Lesson Series)

This is Activity 4 in a structured robotics progression:

1️⃣ Robot Sound Alert System (Sound Sensing)
2️⃣ Robot Direction Detector (Direction Sensing)
3️⃣ Robot Motion Sensor System (Motion Sensing)
4️⃣ Robot Multi-Sensor Alert System (Multi-Sensor Systems) ← This Activity
5️⃣ Robot Smart Monitoring System (Smart Sensor Systems)

👉 Together, these lessons teach students how robots:

detect input → make decisions → respond → combine sensors → build intelligent systems

👉 Unlock the full Sensor-Based Robotics Systems Bundle (5 Activities)

🤖 Smart Robot Innovators Series

This lesson moves students forward from:
• reacting to movement →
• to combining inputs and making decisions

Students progress from:
• sensing the environment
• understanding direction
• detecting motion
• combining multiple inputs
• building intelligent robot systems

🚀 Ready to Teach Robotics the Right Way?

👉 Unlock the full Sensor-Based Robotics Systems Bundle (5 Activities)

✔ Complete 5-lesson progression
✔ Ready-to-use classroom activities
✔ Worksheets + answer keys
✔ Step-by-step coding skill development

💡 This is how real robots work — by combining multiple inputs, making decisions, and responding intelligently using sensors and logic.