Store › Outdoor STEM Explorers - Age 9+/Returning Students Outdoor STEM Explorers - Age 9+/Returning Students $915.00 Twice monthly on Tuesdays. Intermediate-Level outdoor skills course blended with STEM, Ages 8+ Quantity: Add To Cart Added! Twice monthly on Tuesdays. Intermediate-Level outdoor skills course blended with STEM, Ages 8+