This Valentine STEM bundle includes four complete engineering investigations that guide students through exploring forces and motion using hands-on, classroom-ready challenges. Each activity follows a clear, step-by-step learning structure that helps students predict, test, observe, analyze, and explain scientific concepts using real data. Perfect for Valentine-themed science lessons, STEM units, or engineering challenges for Grades 2–5. ✅ Who Is This Resource For?This Valentine STEM bundle i