STEM Challenge Stations | Hands-On STEM Activities & Engineering Centers Bring excitement, creativity, and critical thinking into your classroom with these engaging STEM Challenge Stations! This low-prep resource includes flexible, hands-on STEM activities that encourage students to design, build, test, solve, and innovate while working independently or collaboratively. Perfect for: • STEM centers • science enrichment • early finishers • indoor recess • small groups • homeschool • sub pla