Title: Snowball Launcher — Projectile Motion STEM Challenge (Grades 3–12, NGSS Aligned)Description (emoji-friendly): Launch into winter physics! ❄️ Students test a paper-ball or pom-pom “snowball” launcher to explore projectile motion. Teams hold pullback constant and vary launch angle, measuring distance vs. angle to discover the peak near 45°. They graph data, justify conclusions with CER, and (optionally) estimate launch speed using the range formula. 🎯📈 NGSS Alignment: 3–5: 3-5-ET