288 published interactive labs
Simulation Hub — Interactive Simulations
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288 simulations found
Collatz Conjecture Simulator: The 3n+1 Problem
Interactive Collatz conjecture simulator: watch any starting number ride the 3n+1 sequence down to 1. Adjust the seed, speed, and log scale to explore hailstone paths.
Intermediate · 10–20 minutesOpen simulation →mathematicsSine and Cosine Wave Simulator: Amplitude, Phase
Interactive sine and cosine wave simulator. Drag amplitude, frequency, and phase sliders to see y = A sin(2πf·x + φ) animate and read period live.
Foundation · Under 10 minutesOpen simulation →mathematicsFractal Tree Simulator: Recursive Branching Explained
Fractal tree simulator to build recursive, self-similar branching. Adjust angle, depth, branches, and wind, and watch leaf tips and branch counts grow live.
Intermediate · 10–20 minutesOpen simulation →mathematicsRiemann Sum Simulator: Area Under a Curve Explained
Interactive Riemann sum simulator: drag rectangles under a curve, compare left, midpoint and right rules, and watch the sum converge to the exact integral.
Intermediate · 10–20 minutesOpen simulation →environmental scienceBiodiversity Simulator — Species & Ecosystems
Explore biodiversity indices and species richness by adjusting habitat area, fragmentation, and disturbance to see how ecosystems maintain or lose biological diversity.
Intermediate · 10–20 minutesOpen simulation →environmental scienceCarbon Cycle — Atmospheric CO₂ & Reservoirs
Simulate the global carbon cycle by adjusting emission rates and land-use changes to track CO₂ flows between atmosphere, oceans, soils, and vegetation reservoirs.
Intermediate · 10–20 minutesOpen simulation →environmental scienceClimate Modeling — Temperature & Feedback Loops
Simulate global mean temperature response to greenhouse gas forcing using an energy-balance climate model with adjustable feedback parameters and emission scenarios.
Intermediate · 10–20 minutesOpen simulation →environmental scienceConservation Biology — Population Viability
Model endangered species population viability by setting carrying capacity, reproduction rates, and stochastic threats to estimate extinction risk and recovery time.
Intermediate · 10–20 minutesOpen simulation →environmental scienceEcosystem Dynamics — Predator-Prey Cycles
Simulate Lotka-Volterra predator-prey population dynamics by adjusting growth rates and predation parameters to explore population oscillations and stability.
Intermediate · 10–20 minutesOpen simulation →environmental sciencePollution Dispersion — Air & Water Contaminants
Model pollution dispersion in air and water by setting emission source strength, wind speed, and diffusivity to map contaminant concentration plumes over space and time.
Intermediate · 10–20 minutesOpen simulation →environmental scienceRenewable Energy — Solar, Wind & Grid Mix
Simulate renewable energy generation from solar and wind sources, manage battery storage, and balance a grid with variable demand and clean energy targets.
Intermediate · 10–20 minutesOpen simulation →environmental scienceWater Treatment — Purification Process Simulator
Simulate municipal water treatment stages — coagulation, sedimentation, filtration, and disinfection — and adjust chemical doses to meet drinking water quality standards.
Intermediate · 10–20 minutesOpen simulation →environmental scienceWatershed Pollution — Runoff & Nutrient Loading
Model watershed nutrient pollution from agricultural runoff by adjusting land use, fertilizer application, and riparian buffers to predict stream nitrogen and phosphorus loads.
Intermediate · 10–20 minutesOpen simulation →superhero scienceSuperhero Punch Force — Physics Comparison
Calculate and compare the real physics of punch impact forces from iconic superheroes using momentum, impulse, and Newton's laws applied to their known feats.
Foundation · Under 10 minutesOpen simulation →superhero scienceSpider-Man Train Stop — Momentum & Force Physics
Calculate the real physics behind Spider-Man stopping a runaway train using web lines, applying impulse, tension force, and structural limits from the films.
Foundation · Under 10 minutesOpen simulation →superhero scienceFlash Speed Physics — Relativity & Kinetic Energy
Explore the real physics of super-speed: compare the Flash to sprinters, jets, and light itself, and see kinetic energy, air drag, and relativistic effects at each speed.
Advanced · 20+ minutesOpen simulation →superhero scienceSuperman Flight Physics — Thrust, Drag & G-Force
Simulate Superman's flight with real aerodynamics: adjust gravity, escape speed, and drag coefficient, then track speed, altitude, and G-force through each flight phase.
Foundation · Under 10 minutesOpen simulation →superhero scienceIron Man Repulsor Physics — Thrust & Energy Density
Calculate the thrust and power Iron Man's suit really needs to hover and fly, and compare the arc reactor's energy density to lithium-ion, petrol, and nuclear fuel.
Intermediate · 10–20 minutesOpen simulation →superhero scienceHulk Jump Physics — Projectile Motion & Gravity
Launch the Hulk on Earth, the Moon, Mars, and Jupiter: set anger level, launch angle, and speed, then measure max height, range, and impact using projectile motion.
Foundation · Under 10 minutesOpen simulation →superhero scienceCaptain America Shield Physics — Ricochet & Spin
Throw Captain America's vibranium shield: control velocity, angle, and spin rate, then trace multi-bounce ricochets with kinetic energy, angular momentum, and impact force.
Intermediate · 10–20 minutesOpen simulation →competitive examsJEE Electric Fields — Interactive Physics Practice
Practice JEE-level electric field and potential problems interactively, visualizing field lines and equipotentials for point charges, dipoles, and charge distributions.
Exam practice · 10–20 minutesOpen simulation →competitive examsJEE Mechanics Challenge — Forces & Motion Practice
Sharpen JEE mechanics skills with interactive problems on Newton's laws, friction, projectile motion, and rotational dynamics with instant visual and analytical feedback.
Exam practice · 10–20 minutesOpen simulation →competitive examsUPSC CSAT Statistics — Distributions & Data Sets
Practice UPSC CSAT statistics and data interpretation with interactive problems on mean, median, mode, variance, and probability distributions drawn from real data sets.
Exam practice · 10–20 minutesOpen simulation →mathematicsStatistical Distributions — Interactive Probability
Explore normal, binomial, Poisson, and other statistical distributions by adjusting parameters and computing probabilities, percentiles, and moment statistics interactively.
Intermediate · 10–20 minutesOpen simulation →Learn science by changing the variables
SciFunLab turns equations into experiments. Compare a projectile motion simulation with the forces behind the Magnus effect, then investigate viscosity inside the fluid dynamics lab. Each page opens the working model directly, with no synthetic worksheet or course page between you and the experiment.
Advanced learners can trace light in the ray tracing lab, inspect atomic signals with NMR spectroscopy, model populations in the ecology simulation, or practise network design with the subnetting simulator.
Browse the engineering simulation collection, play browser physics games, or see how this catalogue compares as a PhET alternative for free interactive STEM exploration.