Every simulation is an exploration.
No software installation. No sign-in needed to begin.
Learn your way
- Choose a subject and topic from the library.
- Open the simulation. Drag to rotate the view; scroll or pinch to zoom.
- Read the current question, adjust parameters and observe the result.
- Show the conclusion when you are ready, then move to the next step.
On your phone
The 3D view takes priority. Use “Guide”, “Controls” and “Model” to switch panels; rotate to landscape for more space. Select “Light mode” if your device is slow.
For teachers
Present fullscreen, invite predictions before changing parameters, and compare observations with the model. Download Vietnamese or English HTML for offline use and switch languages within the file. The source uses idealised values; read each lesson's explanations before using it in class.
Bilingual learning
Click VI ⇄ EN to switch the whole lesson while keeping the current step and parameters. Drag the floating control to a convenient position; with its grip focused, arrow keys also move it. Select a sentence or term to compare both languages and save it to your Study notebook. Use the notebook for review, quizzes and arranging items into HTML lesson plans.
Progress and accounts
Guest progress stays in your browser. Sign in or register with Tài Nguyên Số to save lessons, download Vietnamese HTML and synchronize progress across devices. Synchronization transfers only the signed-in account's learning data; guest progress is not imported automatically.
Simulation limitations
Models help reveal principles; they do not replace real experiments, laboratory safety procedures or a teacher's guidance. Each lesson identifies its original textbook references for comparison.