Bring hands-on learning to your classroom with this 4th grade NGSS science investigation focused on communication through codes! This engaging science station activity allows students to explore how messages are sent over distances using sound and light signals, while applying engineering design and problem-solving skills.

Aligned to NGSS 4-PS4.C, this STEM investigation activity challenges students to create, test, and refine their own communication system. Students will collaborate to design codes using non-verbal signals and evaluate how effectively their messages are transmitted and understood.

🧠 Skills Covered

• Designing and testing solutions using patterns to transfer information
• Understanding how communication systems use signals (light & sound)
• Applying engineering practices (trial, error, and redesign)
• Analyzing advantages and limitations of communication methods
• Reading informational text and responding to comprehension questions

📦 What’s Included

• Teacher notes with NGSS alignment (4-PS4.C & ETS1.C)
• Student reading passage on communication methods (smoke signals, drums, telegraph, modern technology)
• Hands-on “Crack a Code” investigation activity
• Student worksheets:
  • Activity planning sheets
  • Reflection questions
  • Short answer comprehension questions
  • Fill-in-the-blank and multiple choice options
• Task cards for flexible use
• Rubric for evaluating communication systems
• Answer key

🧪 How It Works

Students are challenged to:

• Develop a code using visual or auditory signals (not voice)
• Send two messages across the room
• Test and refine their communication system
• Evaluate effectiveness based on clarity and distance

This inquiry-based approach encourages critical thinking and collaboration while reinforcing key science concepts.

💡 Why Teachers Love It

• ✔️ Truly hands-on and engaging STEM activity
• ✔️ Encourages creativity and problem-solving
• ✔️ Easy to prep with multiple worksheet options
• ✔️ Built-in differentiation and assessment tools
• ✔️ Strong NGSS alignment with real-world application

This Investigate science station is the perfect way to help students actively explore how communication systems work—making abstract concepts concrete, collaborative, and fun! ✨

This INVESTIGATE station is also available in a larger bundle of 7 stations at a discount.

Talk to Me Science Stations for Fourth Grade Next Generation Science Standards include 8 different science stations where students deepen their understanding of communication through codes & technology. The focus is on 4-PS4.C and includes concepts such as computer coding, cell phones, satellites, Morse code, binary numbers, drum code messages, digital and analog technology, and sending and receiving codes.

TERMS OF USE

Copyright © What I Have Learned, Jessica Boschen

Permission to copy for single classroom or homeschool family use only.

This product may not be distributed or displayed digitally for public view.

Please purchase additional licenses if you intend to share this product.