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Simple Machines—Student Laboratory KitLet students experiment with simple machines and learn about gear ratios, all classes of levers and pulley combinations. Students compare the machines’ mechan-ical advantages and determine the most beneficial setup. Lab stations let sudent groups rotate, experimenting with one simple machine at a time. All activities can be completed in two class periods. Includes all mechanical apparatus, instructions, student worksheets and sample data. AP6931 I $153.40Gyroscope Bicycle WheelTwist the handles of this spinning handheld bicycle wheel and feel gyroscopic motion and show why it is used in stabilizers and naviga-tional devices. Stand on a rotational turntable to demonstrate conservation of angular momentum or tie a rope to an eye screw in one handle and “violate” gravity when it doesn’t fall over. Comes completely assem-bled and includes advanced background information and activity instructions. AP4610 I $116.75Physical Science—Flinn STEM Design Challenge™ 9-Kit BundleCost-saving bundle includes 9 Flinn STEM Design Challenge™ Physical Science kits to bring engineering design into your classroom confidently. Kits include Investigate a Twirling Toy, Build a Model Catapult, Roller Coasters, Create a Mobile, Egg Elimination, Drop Zone, Eggs-streme Parachuting, Paper Airplanes and Building Bridges. See other listings or flinnsci.com for individual kit details.AP8084 I $389.00Newton’s Laws— Activity-Stations KitNewton’s laws govern all physical motion and interactions. In this activity-stations lab, students investigate inertia, force and acceleration with air pucks, carts and pulleys with hanging weights and balloon rockets, respectively. Each independent mini-lab takes 10–15 minutes and can be done in any order. Includes supplies for two stations for each activity, Teacher Notes, background informa-tion and reproducible student handouts.AP7408 I $88.70FORCE, MOTION & PRESSUREBuild a Mini Hovercraft—Guided-Inquiry KitStudents build working models of hovercrafts and learn the basic concepts of “riding on air.” After construction, students test the models, make observations and propose testable ques-tions. In planning and conducting investigations and designing their models, students gain valuable science and engineering practice as this STEM activity covers force, motion, energy and air pressure. 9-V batteries are required and available separately.AP7519 I $68.90Building Bridges—Flinn STEM Design Challenge™Bridges range from a simple fallen tree over a creek to the complicated Brooklyn Bridge in New York. Students design and build a bridge with only balsa wood and glue with the goal of building it to support the most weight possible. Students design blue prints, build with specific criteria and constraints, including time. Students learn about forces and make models while learn-ing the value of teamwork and determination.AP8062 I $102.25