NGSS-Aligned Resources

Free NGSS Science Simulations

Browser-based science simulations and virtual labs for NGSS-aligned instruction in grades K-12. Physical science, life science, and earth and space science. Every resource runs free with no login, no download, and no setup.

Physical Science Life Science Earth Science
Physical Science Life Science Earth Science

Physical Science

Motion, Forces, Energy, and Waves

Tools and labs for NGSS physical science performance expectations across grades 6-12.

Forces & Free-Body Diagram Tool

Explore Newton's second law with interactive free-body diagrams on surfaces, inclines, and pulley systems.

Wave Explorer

Visualize transverse waves, superposition, interference, and standing waves with adjustable frequency and amplitude.

Circuit Calculator

Calculate voltage, current, resistance, and power. Build series and parallel resistor networks with step-by-step solutions.

Energy Conservation Explorer

Track kinetic, potential, and spring energy as an object moves along ramps, roller coasters, and spring systems.
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Pendulum Lab

Measure pendulum period at different lengths to derive gravitational acceleration. Plot T squared vs L.
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Hooke's Law Lab

Hang masses on a spring, measure extension, and find the spring constant from the slope of F vs x.

Life Science

Cells, Organisms, Ecosystems, and Heredity

Biology tools and labs aligned to NGSS life science disciplinary core ideas from grades K through 12.

Punnett Square Calculator

Model genetic crosses for monohybrid, dihybrid, and sex-linked traits. Genotype and phenotype ratios with a Punnett grid.

Population Growth Simulator

Simulate exponential, logistic, and Lotka-Volterra predator-prey population models with carrying capacity analysis.

Photosynthesis Explorer

Explore photosynthesis rates under different light intensities, CO2 concentrations, and temperatures.

Cellular Respiration Explorer

Explore glycolysis, Krebs cycle, and electron transport chain. Compare aerobic vs anaerobic respiration.
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Photosynthesis Lab

Investigate photosynthesis rates under different light intensities, CO2 concentrations, and temperatures.
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Enzyme Activity Lab

Measure reaction rates under different substrate concentrations, temperatures, and pH. Fit data to Michaelis-Menten.

Earth and Space Science

Earth Systems, Climate, and Space

Earth and space science resources aligned to NGSS ESS core ideas for grades 3 through 12.

Greenhouse Effect Explorer

Adjust CO2, CH4, and N2O levels, albedo, and solar intensity to see equilibrium temperature changes.

Plate Tectonics Explorer

Explore plate boundary types, the rock cycle, radiometric dating, and Earth's internal layers with cross-section views.

Earthquake Magnitude Calculator

Calculate Richter and moment magnitude, energy release, and compare earthquakes on a seismic scale.

Carbon Footprint Calculator

Estimate annual CO2 emissions from transportation, home energy, diet, and lifestyle with a detailed breakdown.
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Greenhouse Effect & Climate Lab

Adjust CO2 levels and albedo, measure temperature response, and compare emission scenarios from pre-industrial to RCP 8.5.
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Earth History Lab

Calculate rock ages using radiometric dating with C-14, K-40, U-238, and Rb-87 isotope systems.

Browse by NGSS Standard

Use the NGSS Standards Hub to find tools and labs mapped to specific performance expectations.

NGSS Standards Hub All Tools All Labs