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smithjohn78390/tongjiang-lab

smithjohn78390 · personal account · GitHub id 142080035
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Free interactive 3D science lessons for high school · 铜匠实验室 · https://lab.tongjiang.app

tools3dbiologychemistryeducationgeographyhigh-school
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Created
2026-10-28 (1d)
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2026-10-28
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tools
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In short

Tongjiang Lab is a collection of 54 free, interactive 3D science lessons for high school students covering physics, chemistry, biology and geography, aligned with the Chinese national senior high curriculum standards and PEP 2019 textbooks. Each lesson is a single self-contained HTML file of about 1 MB that runs offline in a browser, and each presents a 3D scene with a live control console, a guiding question and a step-by-step sequence for teachers. The lesson interface is currently in Chinese only.

Written by GitPad research from the repo’s public material. The full text follows below.

README · straight from GitHub

Tongjiang Lab

English | 简体中文

Free, interactive 3D science lessons for high school — physics, chemistry, biology and geography.

Try them online: https://lab.tongjiang.app

There are 54 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.

How to use

  • Online: click ▶ Open lesson in the tables below. GitHub only shows the source code of an HTML file, so use these links to see the lessons.
  • Offline: download all lessons as one zip from Releases, or download a single lesson from its page on https://lab.tongjiang.app, then 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.json lists every lesson with its textbook location and steps.

Lessons

Physics (10)

Lesson PEP 2019 textbook Steps Open Source
The Photoelectric Effect Elective Vol. 3, Ch. 4, Sec. 2 9 ▶ Open lesson HTML
Observing Capacitor Charging and Discharging Required Vol. 3, Ch. 10, Sec. 4 9 ▶ Open lesson HTML
Experiment: Acceleration vs. Force and Mass Required Vol. 1, Ch. 4, Sec. 2 8 ▶ Open lesson HTML
Experiment: Verifying Conservation of Mechanical Energy Required Vol. 2, Ch. 8, Sec. 5 8 ▶ Open lesson HTML
Experiment: Exploring Projectile Motion Required Vol. 2, Ch. 5, Sec. 3 9 ▶ Open lesson HTML
Centripetal Force vs. Radius, Angular Velocity and Mass Required Vol. 2, Ch. 6, Sec. 2 8 ▶ Open lesson HTML
Self-Induction and Eddy Currents Elective Vol. 2, Ch. 2, Sec. 4 9 ▶ Open lesson HTML
Measuring EMF and Internal Resistance Required Vol. 3, Ch. 12, Sec. 3 9 ▶ Open lesson HTML
Magnetic Field of an Electric Current Required Vol. 3, Ch. 13, Sec. 1 9 ▶ Open lesson HTML
Brownian Motion and Diffusion Elective Vol. 3, Ch. 1, Sec. 1 9 ▶ Open lesson HTML

Chemistry (25)

Lesson PEP 2019 textbook Steps Open Source
Industrial Ammonia Synthesis (Haber Process) Elective Vol. 1, Ch. 2, Sec. 4 7 ▶ Open lesson HTML
Factors Affecting Reaction Rate Required Vol. 2, Ch. 6 8 ▶ Open lesson HTML
Ball-and-Stick Models of Organic Molecules Required Vol. 2, Ch. 7 9 ▶ Open lesson HTML
Strong Acid–Strong Base Titration Elective Vol. 1, Ch. 3, Sec. 2 9 ▶ Open lesson HTML
Preparation and Properties of Chlorine Required Vol. 1, Ch. 2, Sec. 2 9 ▶ Open lesson HTML
Ironmaking in a Blast Furnace Required Vol. 2, Ch. 8, Sec. 1 8 ▶ Open lesson HTML
Metal Smelting: Molten-Salt Electrolysis and the Thermite Reaction Required Vol. 2, Ch. 8, Sec. 1 8 ▶ Open lesson HTML
Coal Utilization: Coal Gasification Required Vol. 2, Ch. 8, Sec. 1 8 ▶ Open lesson HTML
Sulfuric Acid by the Contact Process Required Vol. 2, Ch. 5, Sec. 1 7 ▶ Open lesson HTML
Hydrolysis of Salts and Its Applications Elective Vol. 1, Ch. 3, Sec. 3 9 ▶ Open lesson HTML
Industrial Cement Production Required Vol. 2, Ch. 5, Sec. 3 8 ▶ Open lesson HTML
Iron and Its Compounds: Changing Oxidation States Required Vol. 1, Ch. 3, Sec. 1 9 ▶ Open lesson HTML
Principles of Electrolysis: CuCl₂ Solution and Brine Elective Vol. 1, Ch. 4, Sec. 2 9 ▶ Open lesson HTML
Preparation and Properties of Ammonia (Fountain Experiment) Required Vol. 2, Ch. 5, Sec. 2 9 ▶ Open lesson HTML
Factors That Shift Chemical Equilibrium Elective Vol. 1, Ch. 2 9 ▶ Open lesson HTML
Flame Tests and Atomic Spectra Required Vol. 1, Ch. 2, Sec. 1 8 ▶ Open lesson HTML
Galvanic Cells: From One Electrolyte to Two Required Vol. 2, Ch. 6, Sec. 1 9 ▶ Open lesson HTML
Ionization, Solution Conductivity and Ionic Reactions Required Vol. 1, Ch. 1, Sec. 2 9 ▶ Open lesson HTML
Concentrated and Dilute Nitric Acid; Nitrogen Oxides Required Vol. 2, Ch. 5, Sec. 2 9 ▶ Open lesson HTML
Bromine from Seawater: The Air Blow-Out Process Required Vol. 2, Ch. 8, Sec. 1 7 ▶ Open lesson HTML
Properties of Sodium (and Putting Out Sodium Fires) Required Vol. 1, Ch. 2, Sec. 1 9 ▶ Open lesson HTML
Sulfur, SO₂ and Sulfuric Acid: Converting Between Oxidation States Required Vol. 2, Ch. 5, Sec. 1 9 ▶ Open lesson HTML
Oxygen-Absorption Corrosion and Designing a Hand Warmer Elective Vol. 1, Ch. 4, Sec. 3 9 ▶ Open lesson HTML
The Chlor-Alkali Industry Elective Vol. 1, Ch. 4, Sec. 2 8 ▶ Open lesson HTML
Hou's Soda Process Required Vol. 1, Ch. 2, Sec. 1 8 ▶ Open lesson HTML

Biology (5)

Lesson PEP 2019 textbook Steps Open Source
Water Uptake and Loss in Plant Cells Required Vol. 1, Ch. 4, Sec. 1 8 ▶ Open lesson HTML
Transport Across Cell Membranes Required Vol. 1, Ch. 4 8 ▶ Open lesson HTML
Generation and Conduction of Nerve Impulses Elective Vol. 1, Ch. 2, Sec. 3 9 ▶ Open lesson HTML
Observing Mitosis in Root-Tip Meristem Cells Required Vol. 1, Ch. 6, Sec. 1 9 ▶ Open lesson HTML
Conditions Affecting Enzyme Activity Required Vol. 1, Ch. 5, Sec. 1 8 ▶ Open lesson HTML

Geography (14)

Lesson PEP 2019 textbook Steps Open Source
Development of River Landforms Elective Vol. 1, Ch. 2, Sec. 3 8 ▶ Open lesson HTML
Migration of the Subsolar Point: Seasons and Climate Zones Elective Vol. 1, Ch. 1, Sec. 2 9 ▶ Open lesson HTML
World Ocean Currents: Patterns and Effects Elective Vol. 1, Ch. 4, Sec. 2 9 ▶ Open lesson HTML
Ocean–Atmosphere Interaction: El Niño and La Niña Elective Vol. 1, Ch. 4, Sec. 3 7 ▶ Open lesson HTML
How the Atmosphere Is Heated Required Vol. 1, Ch. 2, Sec. 2 9 ▶ Open lesson HTML
Formation and Recognition of Karst Landforms Required Vol. 1, Ch. 4, Sec. 1 7 ▶ Open lesson HTML
Global Climate Change and National Security Elective Vol. 3, Ch. 3, Sec. 4 8 ▶ Open lesson HTML
Formation of Tectonic Landforms Elective Vol. 1, Ch. 2, Sec. 2 6 ▶ Open lesson HTML
Geographic Significance of Earth's Motions Elective Vol. 1, Ch. 1, Sec. 2 9 ▶ Open lesson HTML
Soil-Forming Factors and Soil Profiles Required Vol. 1, Ch. 5, Sec. 2 8 ▶ Open lesson HTML
Thermal Circulation Required Vol. 1, Ch. 2, Sec. 2 9 ▶ Open lesson HTML
Horizontal Motion of the Atmosphere: Wind Required Vol. 1, Ch. 2, Sec. 2 8 ▶ Open lesson HTML
The Water Cycle and Its Geographic Significance Required Vol. 1, Ch. 3, Sec. 1 9 ▶ Open lesson HTML
Pressure Belts, Wind Belts and the Three-Cell Circulation Elective Vol. 1, Ch. 3, Sec. 2 7 ▶ Open lesson HTML

License

  • 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.

Author

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.