288 published interactive labs
Simulation Hub — Interactive Simulations
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288 simulations found
Population Genetics Simulation: Hardy-Weinberg & Allele Drift
Model allele frequency change across generations using Hardy-Weinberg equilibrium in this free interactive population genetics simulation.
Intermediate · 10–20 minutesOpen simulation →biologyProtein Folding Simulation: From Sequence to Structure
Watch a polypeptide fold into its functional 3D shape in this free interactive protein folding simulation — explore hydrophobic collapse, secondary structure, and misfolding.
Intermediate · 10–20 minutesOpen simulation →biologyVirology Simulation: Viral Structure, Replication & Infection
Explore viral structure, host cell entry, replication cycles, and immune evasion in this free interactive virology simulation for biology students.
Intermediate · 10–20 minutesOpen simulation →biologyVirus Spread Simulation: Track an Outbreak in a Population
Watch a virus spread through a population and test interventions in this free interactive virus spread simulation for epidemiology and biology students.
Intermediate · 10–20 minutesOpen simulation →biologyNeuron Action Potential Simulator Explained
Interactive neuron action potential simulator: stimulate an axon, watch voltage spike to +40 mV and repolarize on a live oscilloscope, and see Na+/K+ ion flux.
Intermediate · 10–20 minutesOpen simulation →biologyPredator-Prey Cycles Simulator: Lotka-Volterra
Interactive predator-prey simulator: tune the Lotka-Volterra model with live sliders and watch rabbit and fox populations boom, bust, and cycle in real time.
Intermediate · 10–20 minutesOpen simulation →biologyOsmosis Simulator: Semipermeable Membrane Explained
Interactive osmosis simulator: adjust solute on each side of a semipermeable membrane and watch water flow toward the saltier side until levels reach equilibrium.
Foundation · Under 10 minutesOpen simulation →biologyEnzyme Lock and Key Model Simulator | Substrate Reaction
Interactive enzyme lock and key simulator: bind key-shaped substrates to an active site, tune temperature, and watch reaction rate peak, slow, or denature.
Intermediate · 10–20 minutesOpen simulation →biologyLogistic Population Growth Simulator: S-Curve
Interactive logistic population growth simulator. Adjust growth rate r and carrying capacity K to watch the S-curve rise, slow, and plateau in real time.
Foundation · Under 10 minutesOpen simulation →biologyBlood Circulation Simulator: Beating Heart Explained
Interactive blood circulation simulator with a beating heart. Adjust heart rate and stroke volume, watch cells oxygenate, and see cardiac output update live.
Intermediate · 10–20 minutesOpen simulation →chemistryAcid-Base Chemistry – Free Interactive Online Lab
Explore pH, proton transfer, and strong vs. weak acid dissociation in this free interactive online acid-base simulator. Visualize Brønsted-Lowry theory.
Foundation · Under 10 minutesOpen simulation →chemistryBiochemistry Simulator – Enzymes & Molecules Online
Explore enzyme kinetics, protein structure, and metabolic pathways in this free interactive online biochemistry simulator for students and educators.
Intermediate · 10–20 minutesOpen simulation →chemistryBuffer Solution Simulator – pH Resistance Online Lab
Learn how buffers resist pH change by adding strong acid or base in this free interactive buffer simulator using the Henderson-Hasselbalch equation.
Intermediate · 10–20 minutesOpen simulation →chemistryChemical Equilibrium – Le Chatelier's Principle Online
Explore reversible reactions, equilibrium constants, and Le Chatelier's principle in this free interactive online chemical equilibrium simulator.
Intermediate · 10–20 minutesOpen simulation →chemistryChemical Kinetics – Rate Laws & Arrhenius Equation Online
Investigate rate laws, rate constants, and activation energy with this free online chemical kinetics simulator. Study first- and second-order reactions.
Intermediate · 10–20 minutesOpen simulation →chemistryChromatography Simulator – TLC & Column Separation Online
Separate mixtures by polarity in this free interactive chromatography simulator covering paper, thin-layer, and column chromatography techniques.
Intermediate · 10–20 minutesOpen simulation →chemistryComputational Chemistry – Molecular Modeling Online
Explore geometry optimization, energy surfaces, and orbital visualization in this free interactive online computational chemistry simulator for students.
Advanced · 20+ minutesOpen simulation →chemistryCoordination Chemistry – Crystal Field Theory Online
Explore transition metal complexes, crystal field splitting, and ligand field theory in this free interactive online coordination chemistry simulator.
Intermediate · 10–20 minutesOpen simulation →chemistryCrystal Lattice Simulator – Unit Cells & Packing Online
Visualize ionic, metallic, and covalent crystal lattice structures in 3D with this free online crystal lattice simulator. Explore unit cells and packing.
Intermediate · 10–20 minutesOpen simulation →chemistryElectrochemistry Lab – Galvanic Cells & Nernst Equation
Build galvanic and electrolytic cells, calculate cell potential using the Nernst equation, and explore electrolysis in this free online electrochemistry lab.
Intermediate · 10–20 minutesOpen simulation →chemistryMass Spectrometry Simulator – Free Online MS Lab
Learn how mass spectrometry identifies molecules by m/z ratio in this free interactive online mass spectrometry simulator with fragmentation analysis.
Intermediate · 10–20 minutesOpen simulation →chemistryMolecular Lab – Build & Visualize 3D Molecules Online
Build molecules in 3D, apply VSEPR theory, and explore bonding in this free interactive online molecular lab simulator for geometry and polarity.
Intermediate · 10–20 minutesOpen simulation →chemistryNanomaterials Simulator – Quantum Dots & Nanoparticles
Explore how size governs properties of nanoparticles, quantum dots, and carbon nanostructures in this free interactive online nanomaterials simulator.
Advanced · 20+ minutesOpen simulation →chemistryOrganic Chemistry – Reactions & Mechanisms Online Lab
Practice drawing mechanisms, predicting products, and understanding functional groups in this free interactive online organic chemistry simulator.
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.