Unplugged Robotics & Cyber-STEM Pack 1: Sensor Systems & Logic Gates (4th–8th)

Introduce physical sensor mechanics, Boolean logic gates (AND/OR/NOT), circuit schematics, multi-sensor vehicle algorithms, and real-world aerospace software failures with Unplugged Robotics & Cyber-STEM Unit 1: Sensor Systems & Conditional Logic Gates! This 9-page printable resource requires zero screens, computers, or expensive electronics kits for students. Designed for a smooth 60- to 75-minute rotation lab using low-cost materials like cardboard strips, brass fasteners, and paper clips. 📦 WHAT IS INCLUDED IN THIS 9-PAGE PACK? Page 1: Teacher Setup & Master Guide Includes master materials checklist, desk map, pre-punched lever arm prep steps, and timing guidelines. Page 2: Student Answer Sheet (1-Page Master Handout) A single, accountable handout for students to carry from Station 1 through Station 5 on a clipboard. Page 3: Station 1 Sign — Mechanical Sensor Switch Build Lab Students construct a mechanical limit switch using cardboard levers and push-pin contacts, testing Normally Open (NO) vs. Normally Closed (NC) physical circuit states. Page 4: Station 2 Sign — Logic Gate Voltage & Threshold Lab Students evaluate AND, OR, and NOT Boolean logic gate truth tables and compare analog sensor voltage inputs against digital trigger thresholds. Page 5: Station 3 Sign — Logic Gate Circuit Schematic Students draft 2D circuit diagrams linking dual bumper sensors through logic gates to motor shutoffs and explain redundant safety controls. Page 6: Station 4 Sign — Autonomous Rover Multi-Sensor Algorithm Students trace a conditional flowchart evaluating front and side distance sensors to direct motor steering angles, reverse navigation, and hazard stops. Page 7: Station 5 Sign — Real-World Case Study Students read a technical passage on The 1999 Mars Climate Orbiter Failure, analyzing how mismatched unit data across system interfaces caused a $125-million crash. Page 8: Detailed Teacher Answer Key Includes fully worked truth tables, voltage threshold checks, schematic guidelines, algorithm solutions, and case study answers in plain text. Page 9: 10-Point Master Grading Rubric A criteria-specific rubric evaluating every station on a 0-to-2 point scale for fast, objective grading. 🎯 LEARNING OBJECTIVES & ALIGNMENT NGSS MS-ETS1-1, MS-ETS1-2: Engineering Systems & Safety Controls CSTA 2-AP-10, 2-AP-12: Unplugged Control Algorithms, Boolean Logic, & Sensor Data Processing CCSS.MATH.PRACTICE.MP1 & MP4: Applied Voltage Threshold Math & Boolean Logic Inputs 🛠️ MATERIALS NEEDED Cardboard strips, brass paper fasteners (brads), push pins, cardstock, rulers, and basic calculators. No computers or microcontrollers needed!