288 published interactive labs
Simulation Hub — Interactive Simulations
Explore interactive models, virtual labs, and engineering sandboxes.
Browse all simulations
288 simulations found
Two Pointers Visualizer: Two Sum, Brute Force vs Optimized
Interactive Two Sum visualizer: compare brute force, two pointers, and hash map side by side. Watch L and R pointers glide with a live sum readout and see the operation count fall as you pick a better approach.
Foundation · Under 10 minutesOpen simulation →technologyBinary Search Algorithm Simulator, Visualized
Interactive binary search simulator: watch LOW, MID, and HIGH pointers halve a sorted array each step and see why it runs in O(log n) comparisons.
Advanced · 20+ minutesOpen simulation →technologySorting Algorithms Visualizer: Bubble & Insertion Sort
Watch bubble sort and insertion sort race as animated bars swap in real time. Interactive sorting algorithm visualizer with comparison and swap counters.
Foundation · Under 10 minutesOpen simulation →technologyBloom Filter Simulator: Hash Bits & False Positives
Interactive Bloom filter simulator: add items, watch k hash functions flip bits, and compare measured vs. theoretical false-positive rates in real time.
Advanced · 20+ minutesOpen simulation →technologyFloating Point Error Explained: Why 0.1+0.2 != 0.3
Interactive floating point simulator showing why 0.1 + 0.2 is not 0.3 in binary. Watch fractions expand bit by bit, spot repeating loops, and shrink rounding error.
Advanced · 20+ minutesOpen simulation →technologyLogic Gates Simulator: AND, OR, XOR, NAND Explained
Interactive logic gates simulator: flip inputs A and B to watch AND, OR, XOR and NAND outputs light up in real time and build the truth table live.
Foundation · Under 10 minutesOpen simulation →technologyBFS vs DFS Simulator: Watch Graph Search Live
Interactive BFS vs DFS simulator. Watch breadth-first and depth-first search explore a graph step by step, with the queue and stack shown as they run.
Advanced · 20+ minutesOpen simulation →technologyBinary Counter Simulator: Watch Numbers in Binary
Interactive binary counter. Watch an animated counter tick up in binary, see each bit flip and its place value, and read the decimal equivalent live.
Foundation · Under 10 minutesOpen simulation →technologyConway's Game of Life Simulator (Interactive)
Interactive Conway's Game of Life. Draw cells or load gliders and blinkers, then press play and watch emergent patterns evolve from four simple rules.
Advanced · 20+ minutesOpen simulation →technologyHash Collision Simulator & the Birthday Paradox
Interactive hash collision simulator. Add items to hash buckets and watch collisions appear far sooner than intuition expects — the birthday paradox in action.
Advanced · 20+ minutesOpen simulation →technologyHuffman Coding Simulator: How Compression Works
Interactive Huffman coding simulator. Build a Huffman tree from letter frequencies and see the optimal variable-length codes that make data compression work.
Advanced · 20+ minutesOpen simulation →economicsBehavioral Economics — Bias & Decision Making
Explore behavioral economics concepts like loss aversion, anchoring, and framing effects through interactive choice experiments that reveal systematic decision biases.
Advanced · 20+ minutesOpen simulation →economicsDevelopment Economics — Growth & Poverty Traps
Model economic development dynamics including poverty traps, capital accumulation, and human capital investment to understand why some economies stagnate.
Advanced · 20+ minutesOpen simulation →economicsEnvironmental Economics — Externalities & Carbon Tax
Simulate environmental externalities and carbon pricing by setting pollution costs and tax levels to find the socially optimal output and deadweight loss reduction.
Advanced · 20+ minutesOpen simulation →economicsFiscal Policy Simulator — Government Budget & GDP
Simulate the effects of fiscal policy changes — government spending and taxation — on GDP, employment, and the budget deficit in a Keynesian aggregate demand model.
Advanced · 20+ minutesOpen simulation →economicsGame Theory — Nash Equilibrium & Strategy
Find Nash equilibria in simultaneous and sequential games including the Prisoner's Dilemma, Battle of the Sexes, and entry deterrence using payoff matrix analysis.
Advanced · 20+ minutesOpen simulation →economicsInflation Model — Phillips Curve & Expectations
Simulate inflation dynamics using the Phillips curve and adaptive or rational expectations to trace how output gaps and monetary shocks drive inflation over time.
Advanced · 20+ minutesOpen simulation →economicsInternational Trade — Comparative Advantage
Simulate international trade and comparative advantage by setting production possibilities for two countries and computing gains from specialization and exchange.
Advanced · 20+ minutesOpen simulation →economicsLabor Economics — Wages, Employment & Unions
Explore labor market equilibrium, wage determination, and the effects of minimum wages, unions, and monopsony on employment levels and worker welfare.
Advanced · 20+ minutesOpen simulation →economicsMarket Competition — Perfect to Monopoly
Compare market structures from perfect competition to monopoly and oligopoly by adjusting the number of firms and observing price, quantity, and welfare outcomes.
Advanced · 20+ minutesOpen simulation →economicsMonetary Policy — Interest Rates & Money Supply
Simulate central bank monetary policy by adjusting the money supply and policy interest rate to influence inflation, output, and exchange rates via the LM curve.
Advanced · 20+ minutesOpen simulation →economicsMultiplier Effect — Spending Rounds & GDP
Trace the Keynesian multiplier effect round by round as an initial injection of spending circulates through the economy and multiplies into total GDP change.
Advanced · 20+ minutesOpen simulation →economicsStock Market Simulator — Prices & Valuation
Simulate stock price dynamics using dividend discount models and market sentiment to explore how earnings expectations, interest rates, and risk drive valuations.
Advanced · 20+ minutesOpen simulation →economicsSupply & Demand — Market Equilibrium Simulator
Shift supply and demand curves to find market equilibrium, measure price elasticity, and observe surplus and shortage dynamics in a competitive goods market.
Advanced · 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.