Introduction Challenges Challenge 1: The Good Old-Fashioned Paper Airplane Aerodynamics, Calculating Averages, Measurement Challenge 2: Hammock Among Us Estimation, Analysis, Prediction, Using Natural Resources Challenge 3: Windmills on Your Mind? Wind, Renewable Resources, Capacity, Congruence, Analysis Challenge 4: Will It Go Round in Circles? Geometry, Estimating Measurement, Converting Units of Measurement, Circles Challenge 5: Building Bridges Fundamental Principles of Engineering, Various Bridge Designs Challenge 6: It’s All Downhill From Here Geometry of Circles and Cylinders, Calculating Surface Area, Kinetic Energy, Velocity, Acceleration, Mass, Law of Gravity Challenge 7: Cow-a-Bungee Graphing Lines, Coordinate Planes, Kinetic Energy, Potential Energy, Gravity, Rebound, Carom Challenge 8: Stealthy Design Measurement, Calculating Averages, Radar’s Military Uses, History of Stealth Planes Challenge 9: Whatever Floats Your Boat Calculating Buoyancy and Density, Displacement, Weight Challenge 10: Scrapers in the Sky The Impact of Nature on Design, History of Skyscrapers Challenge 11: Parachute Express Gravity, Air Resistance, Surface Area, Weight, Ratios, History of Parachutes Challenge 12: It’s So Simple Machines Simple Machines, Geometry, Calculating Work Challenge 13: Catapult to the Front of the Line Fulcrum Placement, Effort, Resistance, Work, History of Catapults Challenge 14: Be a Cooper Area, Circumference, Volume, Nets, History of Casks Challenge 15: Whirlybird Liftoff Air Mass, Air Resistance, Lift, Calculating Scale, Physics Concepts Challenge 16: Wheelbarrow Races Work, Force, Simple Machines, Circumference, Measurement Conversion Challenge 17: Kite for a Windy Day Gravity, Lift, Surface Area, Force, History of Kites Challenge 18: Host a Hoist Force, Weight, Work, History of Pulleys Challenge 19: Obstacle Course, of Course Mechanical Force, Potential Energy, Kinetic Energy Challenge 20: Craft a Raft Relationship Between Buoyancy and Density, History of Rafts Challenge 21: CD Car Circumference, Area, Velocity, Mass, Force Challenge 22: It’s Getting Hot in Here Greenhouse Effect, Measuring Temperature, Calculating Volume Challenge 23: The Amazing Trampoline Act Physical Science, Kinetic Energy, Potential Energy, Friction, History of Trampolines Challenge 24: Zip-a-Dee-Doo-Dah Potential Energy, Kinetic Energy, Gravity, Friction, Calculating Distance, Speed, and Time Challenge 25: Breaking Down Barriers Geometry, History of Battering Rams, Castles, and Walls Challenge 26: World’s Fair Science, Innovation, Identifying Problems and Opportunities, Math, Adapting Concepts to Design Needs References About the Author Common Core State Standards Alignment Next Generation Science Standards Alignment