Percent Increase and Decrease Quiz
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Programs & methods
Pi-Day Catapult — Optimize Angle & Tension (Predict vs. Measure) | MS–HS NGSS
Description (NGSS included) Celebrate Pi-Day with a data-driven projectile challenge! Students tune angle and tension on a simple launcher, then predict vs. measure range and compute percent error. Teams graph Range vs. Angle (and optional Range vs. Pullback) and explain results with CER. 🧠📈 🔬 Investigate: hold one variable constant to fairly test the other. 🧮 Model: use a calibration shot or R ≈ (v²·sin(2θ))/g to predict. 📊 Analyze: compare predicted vs. measured; percent error
3rd - 12th
Engineering, General Science, Physics
Candy Corn Parachute Drop — Holiday STEM Challenge (Grades 3–12, NGSS Aligned)
Description Boost engagement with a seasonal engineering challenge that’s easy to prep, budget-friendly, and truly data-driven. In the Candy Corn Parachute Drop, students design, build, and test a parachute that carries a candy-corn payload. They compete for the longest average fall time while meeting real-world constraints, then analyze results and iterate like engineers. What students do Plan a design under material and size limits, predict performance, and sketch. Build a canopy + lines +
4th - 12th
General Science, Physics
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