Turn paper airplanes into real engineering! In this one-class-period STEM challenge, students design, test, and improve a paper airplane that must fly for both distance and accuracy. Perfect for grades 5–9, this low-materials activity works great for regular classroom teachers, STEM specialists, or substitute teachers. What’s Included? Full PowerPoint presentation (editable)Substitute teacher guide – minute-by-minute planPrintable student packet:Pre-Activity WorksheetDesign & Planning SheetDa