🌈✨ Rainbow STEM – Exploring Light & Color
A Hands-On Science & Engineering Challenge (Grades 3–9)

Bring the science of light to life with this engaging, hands-on STEM challenge where students explore how white light separates into a rainbow! In this interactive investigation, learners design and build a working model or experiment that demonstrates how light bends and forms a spectrum.

This resource guides students step-by-step through the Engineering Design Process while building a deep understanding of refraction, wavelengths, and the color spectrum.

🌈 The Challenge

Students are tasked with creating a working demonstration that shows how white light splits into visible colors. They investigate how rainbows form when light bends (refraction) through water or a prism and spreads into a spectrum.

Through experimentation, students explore:

• Refraction (bending of light)
  
• Spectrum (band of colors)
  
• Wavelength (size of a light wave)
  
• How rainbows form in nature
  

🔬 What’s Included (14 Pages):

✔ Introduction & Challenge Page
✔ Explanation of How Rainbows Form (with vocabulary)
✔ Color Spectrum activity (write rainbow colors in order + bonus wavelength question)
✔ Investigation Planning page (hypothesis + variables)
✔ Materials checklist (flashlight, prism, water, CD, spray bottle, etc.)
✔ Design Requirements checklist
✔ Imagine page (draw 2 possible designs)
✔ Plan Your Model blueprint page
✔ Build checklist & reflection questions
✔ Test & Record data table (trials, colors seen, brightness scale)
✔ Improve & redesign reflection
✔ STEM Connection page (Science, Technology, Engineering, Math links)

🛠 Experiment Options Include:

• Prism investigation
  
• Water spray rainbow
  
• CD light reflection
  
• Glass of water + flashlight setup
  

Students test different methods, compare brightness levels, record observations, and improve their designs.

🧠 Skills Students Practice:

• Scientific inquiry & hypothesis writing
  
• Engineering design process
  
• Data collection and analysis
  
• Measuring angles (advanced option)
  
• Observation and critical thinking
  
• Problem-solving and reflection
  

🔗 STEM Connections:

• Science: Light refraction & wavelengths
  
• Technology: Fiber optics and light signals
  
• Engineering: Designing lenses and prisms
  
• Math: Measuring angles and comparing brightness
  

✅ Perfect For:

• Light & optics units
  
• Physics lessons
  
• STEM labs
  
• Science fair projects
  
• Upper elementary & middle school classrooms
  
• Hands-on enrichment activities
  

Make light visible and learning unforgettable with this exciting Rainbow STEM engineering challenge! 🌞🌈