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Primary School Comprehensive Department: "I Am an Energy Conversion Toy Designer"

December 19, 2025

In Week 16, fourth-grade students welcomed their science project exhibition for the semester. The project, titled "Energy Conversion & Toy Design," was based on the energy concepts learned in class. Students transformed abstract scientific ideas into creative toys that could be seen, touched, and operated, fully demonstrating the learning process from theory to hands-on practice.


At the beginning of the project, students reviewed and organized the different forms of energy studied in science class, such as elastic potential energy, gravitational potential energy, and kinetic energy, and explored how these forms can be transformed into one another. Under the guidance of their teacher, each student selected one type of energy transformation and designed a toy around this principle. They then went through a complete design process, including drawing sketches, making blueprints, selecting materials, and building prototype models, continuously testing and improving their work.


The exhibition site was full of exciting creations. Some students used the elastic potential energy of rubber bands to design "power racing tracks," where cars sped forward as the stored energy was released. Others built miniature roller coasters, allowing balls to roll down from heights and convert gravitational potential energy into kinetic energy. There were also tabletop billiards, mini slides, and other toys with clever structures and smooth operation. Each project reflected repeated experimentation and thoughtful problem-solving by the students.


After completing their physical models, students also carried out reflection and evaluation, analyzing whether the energy transformations in their toys were efficient and proposing possible improvements. During the presentations, they designed creative advertisements for their toys, vividly explaining the scientific principles and key features, and confidently answered questions from teachers and classmates.


This science project exhibition not only enhanced students' hands-on skills and engineering thinking but also helped them deeply understand that scientific knowledge comes from life and serves life. Energy was no longer just a term in a textbook--it truly "came to life" through their toys.









(Written by Wu Xiaodong

Picture by G4 Homeroom Teachers

Reviewed by Mr. Wu Xiaodong, Shiyu Wu)