Please read the document below for detailed category descriptions and recommendations. You may also visit the category pages for simplified requirements.

Computation & Robotics | Infernal Contraptions | Intelligence & Behavior | Invention & Reverse Engineering

Living Things | The Physical Universe | Science Fiction

Click here to view the 2017 winners from each category at the Placer County STEM Expo

GCOE STEM Expo Category Descriptions and Recommendations (2017-2018)