About SciSim

Free, interactive science simulations built for IGCSE students and teachers.

What is SciSim?

SciSim.co.uk is a collection of interactive browser-based simulations covering the IGCSE Physics, Chemistry and Biology syllabus. Every simulation runs directly in your browser — no downloads, no installations, no sign-up required.

Each simulation is designed to help students visualise abstract scientific concepts, from gas particle behaviour to enzyme kinetics to radioactive decay. They're ideal for classroom demonstrations, independent revision, or simply satisfying your curiosity about how the world works.

Features

🎮

Fully Interactive

Adjust variables with sliders and controls. See results in real time with animated visuals and live graphs.

📊

Data Export

Export your experimental data as CSV files and save graphs as PNG images for your coursework and notes.

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Works Everywhere

Runs on any device with a modern browser — desktop, tablet or phone. No special software needed.

🌍

Multi-Language

Homepage available in 10 languages including Chinese, Hindi, Spanish, French, Arabic and more.

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Accurate Science

Every simulation uses correct scientific equations and models aligned with the IGCSE specification.

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Completely Free

All simulations are free to use for students, teachers and anyone interested in science.

Simulations by Subject

Physics

Chemistry

Biology

For Teachers

SciSim simulations work brilliantly on interactive whiteboards and projectors. Use them for lesson starters, demonstrations, or student-led investigation tasks. Every simulation includes key IGCSE concept definitions at the bottom for quick reference.

Because everything runs in the browser, there's nothing to install on school computers. Just visit the site and start exploring.

Ready to explore?

Jump straight into the simulations and start learning.

Browse Simulations →