🚨 THE PERFECT END-OF-YEAR STEM ACTIVITY TO KEEP STUDENTS ENGAGED, COLLABORATING, AND PROBLEM-SOLVING AFTER TESTING SEASON! 🚨

Challenge students to think like real robotics engineers with this interactive blackline master companion activity designed to accompany the online “Keep It Safe” LEGO® SPIKE™ Prime lesson! Students will build, test, and program a functional safe-deposit box while documenting their logic, sensor data observations, and security algorithms directly into their engineering notebook pages.

This lesson focuses heavily on conditional logic, sensor-triggered outputs, and technical documentation through hands-on robotics challenges students LOVE.

Perfect For:

• Middle School Computer Science
• Robotics & Engineering Labs
• STEM & Makerspaces
• Technology Applications
• End-of-Year Activities
• After Testing Engagement
• Collaborative Learning
• Coding & Logic Practice

Recommended for:

• 7th–8th Grade (Advanced/High School Credit)
• Advanced 5th-6th Graders (TAG)
• Introductory High School Robotics
  

What’s Included:

✔ Interactive blackline master student pages including:

• Engineering notebook prompts for conditional logic
• "Make it safer!" challenge activities
• Pseudocode and flowchart documentation templates
• Robot build and test checklists

✔ Detailed Answer Key

✔ Structured Lesson Plan & Teacher implementation guidance

✔ Texas State Standards (TEKS) alignment documentation

Students Will:

• Build a functional safe-deposit box and door mechanism.
• Program a security system that utilizes sensor data (dial rotation) to trigger a motor output.
• Master "if-then" logic to unlock the safe based on specific dial positions.
• Upgrade security by requiring the dial to turn more than 180 degrees before opening.
• Create unique, custom security codes and sequences.
• Document original code logic using professional pseudocode or flowcharts.
  

Skills Covered:

• Conditional Logic ("When and Why" vs. Linear Movement)
• Algorithms & Sequencing
• Sensor Input Analysis (Dial Rotation)
• Collaborative Building (Dividing labor between box and door)
• Problem Solving & Critical Thinking
• Technical Writing & Reflection

TEKS Alignment

Aligned to Texas Technology Applications TEKS including:

• Employability Skills
• Creativity and Innovation
• Critical Thinking, Problem Solving, and Decision Making
• Technology Operations and Concepts
  

Teacher Notes:

• This activity works great as a 1–2 day robotics challenge (45-60 min periods).
• Students work in pairs to promote leadership; one student builds the "Safe-Deposit Box" while the other builds the "Safe-Deposit Door".
• The core "Logic Pivot" helps students move beyond basic movement to understanding how robots make decisions based on real-time data.
• Minimal prep required once robotics kits and student devices are available.
  

⭐ LOVE THIS LESSON? This activity is part of a larger 6-part LEGO® SPIKE™ Prime robotics series designed to strengthen computational thinking, debugging, and engineering design skills through interactive STEM challenges.

👉 Grab the COMPLETE 6-LESSON BUNDLE click here

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