A science teacher from east China surprised students and online viewers with an unusual classroom experiment in December 2025. Wang Yin, who teaches in Ji’an City, Jiangxi Province, built and launched a multi-stage “water rocket” using recycled plastic bottles and buckets.
The project quickly gained attention because it looked simple, but worked like a real rocket, rising high into the sky before safely returning to the ground.
A Rocket Made from Everyday Items
What made the project special was the use of common materials. Wang Yin built the rocket using plastic cola bottles, water buckets, and a small parachute. Nothing expensive or professional was needed. The rocket was prepared on a school playground, where students watched closely as their teacher explained each part before the launch.
The rocket works using a basic law of physics known as Newton’s Third Law of Motion. Air is pumped into the bottle, building pressure inside. When the water is forced out at high speed, the rocket moves upward in the opposite direction. This clear and visible action helped students understand how force and motion work together.
Mid-Air Separation Surprises Viewers
One of the most exciting moments came after liftoff. The rocket did not rise as a single piece. Instead, it showed mid-air stage separation. The first stage lifted the rocket off the ground and then detached while still in the air. After that, the second stage continued flying higher, surprising many viewers who were watching for the first time.
The separation happened smoothly and exactly as planned. This multi-stage design is usually seen in real space rockets, not in school experiments. The demonstration made the launch feel dramatic, even though it was built from recycled materials.
Designed to Land Safely
Safety was also an important part of the project. After reaching its highest point, the rocket slowly came back down using a parachute.
This controlled landing prevented damage and allowed the rocket to be reused. Students watched the entire flight, from launch to landing, without any danger.
Learning Through Action
Wang Yin used the rocket as a hands-on science lesson. Instead of only reading from textbooks, students could see real examples of propulsion, air resistance, and aerodynamics. The experiment showed that science can be active and exciting, even without a laboratory.
The project spread online in mid-December and was widely praised for its creativity and clarity.
From a school playground in Jiangxi to screens around the world, Wang Yin’s water rocket turned a simple physics lesson into a moment many people will remember.
Watch the video here:
@cgtneurope A science teacher in east China’s Jiangxi Province named Wang Yin has built a water rocket using plastic bottles and buckets as part of a hands-on science lesson. The homemade rocket was successfully launched, demonstrating basic propulsion principles and drawing strong interest from students during the experiment. #China #ScienceEducation #STEM #WaterRocket #Education #Classroom #Innovation
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