Animal Sense Explorer

Look at the same nighttime forest through the senses of an owl, a dog, a snake, and a bat, and notice how each animal finds different things because every sense picks up a different kind of information.

v1.2.2

AstroDrop

Drop objects on Earth, the Moon, and Mars, turn air resistance and buoyancy on or off, and see how gravity pulls everything down while lighter objects fall more slowly through the air.

v1.2.1

Balanced & Unbalanced Forces

You push on a puck with arrows. Each arrow is a push, and you can see how the pushes work together to make the puck move, stay still, or change which way it goes.

v1.2.1

Beak & Seed Island

This is an island of birds with three kinds of beaks. You set the food supply and a drought, then watch over many generations which beak shapes help birds survive and which ones fade away.

v1.2.1

Bird Breeder

You are a bird breeder. You choose which birds become parents and keep the chicks you want, shaping which traits become common in your flock over many generations.

v1.1.1

Circular Motion

A ball whirls on a string around a fixed pivot, and you control the radius, speed, and mass before you set it spinning, then reel the string in or cut it to see how the motion responds.

v1.2.1

Earth's Energy Budget

Build a climate model piece by piece: set how much carbon dioxide is in the air, switch feedbacks on or off, and watch Earth settle at a new steady temperature so you can see what drives the warming.

v1.2.1

1D Collision

Send two carts crashing into each other on a frictionless track and see how mass, speed, and the type of collision change the way momentum and kinetic energy carry through the crash.

v1.3.1

A Journey into Deep Space

Fly the Voyager 1 spacecraft away from the Sun and watch how the Sun looks smaller and dimmer with distance, until it fades into just another star among the others in the sky.

v1.1.1

Domain Discovery

You are a field scientist collecting organisms from four different environments and examining their cells under a microscope to figure out how each cell is organized and how that fits where the organism lives.

v1.3.1

Energy Machine Workshop

Build machines that take energy from the sun, wind, water, or fuel and change it into new forms like motion, electricity, light, sound, and heat, and notice how the energy fades so no machine runs forever.

v1.3.1

Erosion Lab

Rain falls on a small island and water washes soil downhill, which is called erosion. You choose the rain and the plant cover, then watch where the soil goes and how much washes away.

v1.2.1

Gear Builder

Build a path of gears so the spinning blue gear on the left makes the orange gear on the right turn, and notice how each gear changes the direction and speed of the next one.

v1.1.1

Half-Life & Radioactive Decay

Put a radioactive sample on a lab bench, point a detector at it, and watch it decay so you can find each isotope's half-life from the decay data you collect.

v1.2.1

Heat It Up

Heat different materials on a hot plate and watch how fast each one warms up, then change the substance, its mass, and the energy you deliver to see what makes the temperature rise.

v0.3.0

Hot Pack, Cold Pack

Dissolve a chemical in water and watch whether it heats up or cools down, like a hot pack or a cold pack, then compare the chemicals to design the best pack for the job.

v1.2.1

Hypotenuse Explorer

Explore how the sides of a right triangle relate across real scenarios — ladders, kites, slides, roofs, and ramps.

v1.2.1

Inheritance

Cross two parent plants and grow 100 baby plants. Look at their flower color and stem height to see how the babies get traits from their parents and how the group is not all the same.

v1.6.1

Light and Shadows

Shine a light on an object and see the shadow it makes on the wall. Try different objects to find out which ones block the light and which ones let it through.

v1.2.1

Magnet Play

Play with magnets and everyday objects to see what a magnet can pull without touching it. Find out which objects a magnet moves, how far its pull reaches, and how magnets push and pull each other.

v1.6.1

Magnetosphere

Earth's invisible magnetic field acts like a shield in space. Make it stronger or weaker and watch what happens to the solar wind and to whether the planet keeps its air over millions of years.

v1.2.1

What's that Fizz?

Mix vinegar and baking soda in an open or closed container, watch the weight on the scale, and figure out whether the total mass stays the same when the gas is trapped or allowed to escape.

v1.1.1

Orbital Motion

Launch a planet into orbit around a star by setting its position, speed, and the star's mass, then watch the path it takes. The recorded data lets you see how its speed, force, and energy change along the way.

v1.7.1

Pendulum Energy

Swing a pendulum and watch its energy change as it moves. Adjust the length, mass, and release angle to see kinetic and potential energy trade back and forth while the total stays constant.

v1.3.1

Photosynthesis & Respiration

Follow one leaf through a day and a night, and watch it make sugar in the light while it breaks that sugar back down around the clock, cycling glucose, oxygen, and carbon dioxide.

v2.18.1

Pool Pushes

Push a ball on a pool table and watch it roll, then change how hard you push and which way you aim to see how the ball moves and bumps other balls.

v1.2.1

Pulley Crane Challenge

Use a pulley and some weights to lift a heavy crate, then switch pulleys to find out how a stronger pulley lets you lift the same load with fewer weights.

v1.1.1

Safety in Numbers

Watch a herd of animals in a grassy field while hunters are near, and gather evidence to see whether the animals are safer, feed better, and react to danger sooner in a group or alone.

v1.2.1

Solar Storm & Radiation Dose

See how much radiation you would get in different places, from sea level out to the Moon, and how a solar storm compresses Earth's magnetic shield and spikes your dose.

v1.2.1

Sound and Vibration Studio

Things that shake make sound, and sound can make other things shake. Pull back the striker, let go, and watch the waves spread out and shake a target.

v1.2.2

Speed Test Lab

You run crash tests on cars at different speeds, sending them into a wall or barrier or braking hard, then read the lab instruments to see how much energy a faster car carries.

v0.2.0

Spinning Earth, Shifting Sky

Spin the sky and move Earth around the sun to see how a stick's shadow, the length of daylight, and the stars in the night sky change over a single day and across a whole year.

v1.2.1

Spring Energy

A block hangs from a spring. Pull it away from rest and let go, and it oscillates up and down while energy shifts back and forth between motion and the stretched or compressed spring.

v1.8.1

Sprout Lab

Grow a seed into a plant. You give it sunlight and water, then watch how tall and healthy it grows.

v1.3.1

Sunlight Warming Surfaces

The sun shines on four surfaces. You watch them get warm, and you can open umbrellas to make shade.

v1.2.1

Thermal Mixing

Heat a metal sphere in a flame, then drop it into water, oil, or sand and watch heat flow from the hot sphere until the two settle at the same temperature.

v1.3.1

Water Cycle Terrarium

Watch the same water move around a sealed glass terrarium. It rises as invisible vapor, cools to form a cloud, and falls back as rain to refill the pond.

v1.2.1

Wave Characteristics

Make ocean waves with wind, then pause and measure their amplitude, wavelength, and period to find the patterns that connect wind speed to the size and spacing of the waves.

v1.3.1

Wave Energy Converter

Make ocean waves power a lighthouse with a floating buoy, then change the wind speed and watch how bigger waves carry more energy and make the light shine brighter.

v1.1.1

Carbon Cycle

You are a carbon atom moving through the air, living things, the ocean, and deep underground. Click a zone to begin, then choose a pathway at each stop to watch carbon transfer between reservoirs along fast and slow routes.

v0.5.0-beta

Coordinate Geometry Lab

A bundle of nine coordinate-geometry investigations — Pythagorean theorem, distance, midpoint, slope, parallel & perpendicular lines, polygons, circles, and parabolas — navigable from a single sim.

v1.0.1-beta

Coulomb and the Atom

Fire alpha particles at a gold foil — one at a time, as it really happened — and read the flashes on a detector ring. Rare violent deflections plus Coulomb's law let students work out for themselves how the atom's positive charge is arranged.

v0.8.0-alpha

Signs of Change

Test four mystery materials, mix a solid with a liquid, then test what comes back to find out which mixtures made a brand new substance and which ones just mixed together without reacting.

v1.2.1-alpha

Safe Travels

You are a travel planner. Look at the weather for each place, decide which one to avoid and why, then pick a safe place you would like to go.

v1.0.5-gamma

Written in Stone

Sweep the Fossil Finder across the cliff to uncover four fossils, then put the animals in order from oldest to youngest, using how deep each fossil sits in the rock as your clue.

v0.3.1-beta

PhET Simulations (PhET-iO)

phet-io-wrapper.html

6 configured:

• Projectile Data Lab v1.0 · streaming
• Gas Properties v1.1 · button
• Circuit Construction Kit: DC v1.4 · button
• Forces and Motion: Basics v2.6.0 · streaming
• Gravity and Orbits v1.6 · button
• Energy Skate Park: Basics v1.5 · streaming

Vernier Sensors (Go Direct)

vernier-wrapper.html

12 configured:

• Go Direct CO₂ Gas streaming
• Go Direct Light and Color streaming
• Go Direct Weather streaming
• Go Direct Sound streaming
• Go Direct Gas Pressure streaming
• Go Direct O₂ Gas streaming
• Go Direct Motion streaming
• Go Direct Force and Acceleration streaming
• Go Direct Optical Dissolved Oxygen streaming
• Temperature Sensor mock streaming
• Motion Detector mock streaming
• Force Sensor mock button