Visual Code Studio Cline Extension, Google Gemini Pro 2.5
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๐ Building a Physics Simulation Using Visual Studio Code, CLINE & Google Gemini 2.5 Pro
Case Study: Free Fall Simulation for the Singapore SLS Platform
๐ก Introduction: A New Way to Build Simulations
Imagine generating a pedagogically sound, interactive simulation using just your words — no manual coding, no external libraries, and no clutter. Thanks to Visual Studio Code with the CLINE Extension and the power of Google Gemini Pro 2.5, this dream is now a reality.
We tested this pipeline by building a Free Fall Simulation tailored for Singapore’s MOE Secondary 3 Physics syllabus. The simulation runs entirely offline in a single HTML file — perfect for the Student Learning Space (SLS) platform.
๐ง AI Prompt used:
"Create a fully interactive, pedagogically sound, and engaging simulation using only HTML, CSS, and JavaScript (no external libraries). The output must be a single self-contained HTML file suitable for embedding within the Singapore Student Learning Space (SLS)."
๐ฏ Simulation Objectives
To visually demonstrate the physics of free fall motion under gravity, using adjustable sliders and dynamic graphs. This simulation aids conceptual understanding by linking kinematic equations to visual movement and data plots.
๐ง๐ Target Audience
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Students aged 14–18 years old
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Subject: Physics
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Level: Secondary 3 (Singapore MOE syllabus)
๐งช Core Simulation Features
1. ๐ช Topic
Free Fall of a Ball
2. ๐ Key Concepts Demonstrated
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Constant acceleration due to gravity (Earth, Moon, Mars options)
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Time of fall and final velocity
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Relationship between height, velocity, and time
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Real-time graphing of motion data
3. ๐️ User-Controlled Variables
| Variable | Control Type | Range |
|---|---|---|
| Initial Height (y₀) | Slider | 0 m – 50 m |
| Initial Velocity (v₀) | Slider | -30 m/s – 30 m/s |
| Gravity (g) | Dropdown | Earth, Moon, Mars |
4. ๐ Key Display Variables
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Time Elapsed (s)
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Current Height (m)
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Instantaneous Velocity (m/s)
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Acceleration due to gravity (m/s²)
Displayed live at the top-right of the simulation panel for quick reference.
5. ๐️ Motion / Animation Displayed
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A ball falling vertically with realistic acceleration
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Bounce effect on impact with the ground (v = 0)
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Continuous update of velocity vector
6. ๐ Output Visualization
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Height vs. Time graph (red)
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Velocity vs. Time graph (blue)
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Both update dynamically as the simulation runs
⚙️ Technical Implementation
๐ ️ Code Environment
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Visual Studio Code with CLINE Extension
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AI model: Google Gemini Pro 2.5
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Also tested with Claude 3.7 Sonnet (agentic task support)
The AI generated:
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HTML structure
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Responsive CSS for layout and accessibility
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JavaScript code with accurate kinematic modeling
All packed neatly into a single index.html file, without any external dependencies.
✅ Scientific Accuracy
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Physics equations used:
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Constant acceleration assumption (free fall only, no air resistance)
๐งฉ User Interface & UX Considerations
๐ Controls (Top Toolbar)
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▶ Play
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⏸ Pause
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⏩ Step (advance by fixed timestep)
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↻ Reset
๐ฑ Interactivity
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Sliders and dropdowns respond in real time
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No page scrollbars (CSS:
overflow: hidden) -
Fullscreen within an iframe:
width: 100%,height: 90%
๐ Visual Aids
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Vectors (velocity) shown via arrows
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Live display box with real-time values
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Graphs shown below animation for clarity
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Scalable labels for touch-friendly usability
♿ Accessibility & Compatibility
Accessibility Features
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High color contrast
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Black text and color-coded arrows
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Label associations with all input controls
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Keyboard navigability for sliders and buttons
Platform Compatibility
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Fully offline
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Compatible with all modern browsers (Chrome, Firefox, Safari, Edge)
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Runs on desktops, tablets, and mobile devices
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Adapts to landscape and portrait modes
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No internet or CDN links required
๐ Preview the Simulation
✅ Working Prototype:
Free Fall HTML5 Simulation on iwant2study.org
๐ฆ Download the HTML file:
freeFallVSCClineGoogle25Pro.zip
You can host this on any educational site or embed it directly into the SLS platform as an Interactive Media Object.
๐ง Why This Workflow Works
✅ Fast Prototyping – No need to hand-code everything
✅ AI-Augmented Accuracy – Gemini Pro 2.5 generates scientifically correct logic
✅ Fully Local + SLS-Ready – No CDN, no vendor lock-in
✅ Future-Scalable – You can build more simulations in Chemistry, Biology, and Math using the same technique
๐ Next Steps
๐ฌ Want help building your own SLS simulation?
Try the following:
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Sketch your UI (PNG) and provide a clear prompt
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Use CLINE + Gemini Pro 2.5 to generate
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Refine + preview in-browser
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Test in iframe mode and upload to SLS
๐ฃ Final Thoughts
This simulation was a collaborative effort between humans and machines, blending domain expertise in physics with the power of generative AI.
If you're an educator, instructional designer, or curious coder — this method can supercharge your ability to build powerful, offline-ready, curriculum-aligned simulations for 21st-century learning.
๐ง Credits
Built using:
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Gemini Pro 2.5 (Google AI)
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CLINE Extension for VS Code
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Inspired by: iwant2study.org EJS simulations



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