9 Best Stem Fair Project Ideas for High School 

1. Solar-Powered Water Purification: Clean water solution using solar energy.

2. Renewable Energy Mapping: Analyzing potential for renewable energy sources.

3. Biodegradable Plastic Alternatives: Eco-friendly alternatives to plastic.

4. Urban Air Quality Monitoring: Sensors to monitor air quality in cities.

5. Hydroponic Farming Systems: Soilless farming for urban agriculture.

6. Automated Waste Sorting: AI-powered waste sorting system.

7. Interactive Virtual Reality Learning: VR for immersive education experiences.

8. Smart Home Energy Management: Energy-efficient systems for homes.

9. DIY Wind Turbine Construction: Build your own wind turbine project.

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