Recoil movement demonstration apparatus for school physics teaching Key benefits Provides a clear, handson demonstration of recoil movement for classroom instruction and laboratory practice. Simple assembly and adjustment let instructors focus on explaining concepts rather than equipment setup. Modular component set supports repeatable experiments and flexible positioning during demonstrations. Main functions and components Purpose: Demonstration experiments on recoil movement in school physics teaching. Included parts: adjusting nails, upper and lower supports, water container, nozzle, base, beam, column, sealing seat, supporting seat, and related fittings. Adjustment: The water container mounts on the bracket and can be rotated and locked with the adjusting screw for precise orientation. How to set up and use Remove the water container with the mouth facing upward. Install the container on the support bracket and adjust the screw so the container rotates smoothly and stays in the desired position. Fill the water container to near the opening. Place the assembled instrument in a sink or suitable receptacle to collect discharged water and keep the work area tidy during demonstrations. Compatibility and performance Designed for use in school physics classrooms and standard teaching laboratories. The included base, beams, columns, and supporting seats create a stable structure for demonstrating recoil effects. Nozzle and sealing seat permit controlled release of water for repeatable experiments. Practical use scenarios Teacherled classroom demonstration: Set up at the front of the class to show how fluid ejection produces recoil movement and to illustrate related motion concepts. Student laboratory experiment: Small groups assemble the apparatus, adjust the container orientation, and record movement responses as part of an inquiry exercise. Demonstration during a lab practical or science fair: Use the device to demonstrate cause and effect while keeping discharged fluid contained in a sink or tray. Additional notes Adjust the container orientation and nozzle position to vary the direction and magnitude of the observed recoil. Use a sink or tray underneath to collect spent water and simplify cleanup. All parts required for the described recoil experiments are included for immediate classroom use.