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Free, interactive 3D science lessons for high school — physics, chemistry, biology and geography.
Try them online: https://lab.tongjiang.app
There are 55 lessons so far. Each one is a single self-contained HTML file of about 1 MB: double-click to open it, and it works offline, on a projector or on an interactive whiteboard. Every lesson is one 3D world with a live control console, a guiding question and a step-by-step path a teacher can follow from start to finish.
The lessons follow the Chinese national curriculum standards for senior high school and the People's Education Press (PEP) 2019 textbooks. The lesson interface is currently in Chinese; other languages are planned.
- Online: open any lesson at https://lab.tongjiang.app.
- Offline: download a file from
courses/and open it in Chrome or Edge. - Embed:
<iframe src="https://lab.tongjiang.app/<slug>" width="100%" style="aspect-ratio:16/9;border:0" allow="fullscreen"></iframe> - Data:
catalog.jsonlists every lesson with its textbook location and steps.
| Lesson | PEP 2019 textbook | Steps | File |
|---|---|---|---|
| The Photoelectric Effect | Elective Vol. 3, Ch. 4, Sec. 2 | 9 | HTML |
| Observing Capacitor Charging and Discharging | Required Vol. 3, Ch. 10, Sec. 4 | 9 | HTML |
| Experiment: Acceleration vs. Force and Mass | Required Vol. 1, Ch. 4, Sec. 2 | 8 | HTML |
| Experiment: Verifying Conservation of Mechanical Energy | Required Vol. 2, Ch. 8, Sec. 5 | 8 | HTML |
| Experiment: Exploring Projectile Motion | Required Vol. 2, Ch. 5, Sec. 3 | 9 | HTML |
| Centripetal Force vs. Radius, Angular Velocity and Mass | Required Vol. 2, Ch. 6, Sec. 2 | 8 | HTML |
| Self-Induction and Eddy Currents | Elective Vol. 2, Ch. 2, Sec. 4 | 9 | HTML |
| Measuring EMF and Internal Resistance | Required Vol. 3, Ch. 12, Sec. 3 | 9 | HTML |
| Magnetic Field of an Electric Current | Required Vol. 3, Ch. 13, Sec. 1 | 9 | HTML |
| Brownian Motion and Diffusion | Elective Vol. 3, Ch. 1, Sec. 1 | 9 | HTML |
| Alpha Particle Scattering and the Nuclear Model of the Atom | Elective Vol. 3, Ch. 4, Sec. 3 | 9 | HTML |
| Lesson | PEP 2019 textbook | Steps | File |
|---|---|---|---|
| Water Uptake and Loss in Plant Cells | Required Vol. 1, Ch. 4, Sec. 1 | 8 | HTML |
| Transport Across Cell Membranes | Required Vol. 1, Ch. 4 | 8 | HTML |
| Generation and Conduction of Nerve Impulses | Elective Vol. 1, Ch. 2, Sec. 3 | 9 | HTML |
| Observing Mitosis in Root-Tip Meristem Cells | Required Vol. 1, Ch. 6, Sec. 1 | 9 | HTML |
| Conditions Affecting Enzyme Activity | Required Vol. 1, Ch. 5, Sec. 1 | 8 | HTML |
- Lessons, covers and catalog are licensed under CC BY-NC 4.0. You may use, share and adapt them for non-commercial purposes, with credit to “Tongjiang Lab (https://lab.tongjiang.app)”.
- Third-party code bundled in the lessons (three.js, MIT) keeps its own license. See THIRD_PARTY_NOTICES.md.
- Not affiliated with People's Education Press.
Tongjiang (铜匠十点睡觉) builds 3D visualizations for education, digital twins and factory demos. Follow on X: @CopperForgeAI. Found a mistake? Open an issue or send a DM on X.