⭐Community-Requested Simulations

Animated carbon cycle diagram (photosynthesis, respiration, decomposition, combustion), a Follow-a-Carbon-Atom dice game, label quiz and worksheet, plus a 3D climate model.

Labeled diagram of evaporation, condensation, precipitation and runoff, a Follow-a-Water-Drop game, label quiz and worksheet, plus a 3D model where you crank the temperature.

Sunlight in, IR out, greenhouse molecules trap the difference. Watch CO₂, CH₄, H₂O each grab a chunk of outgoing heat. Doubled CO₂ → +3 °C. Math meets vision.

N₂ is locked behind a triple bond. Lightning, root-nodule bacteria, and Haber-Bosch are the only three keys. Humans have doubled the cycle — dead zones, N₂O, biodiversity loss.

A 3D school lab: drop magnesium ribbon into acid, collect the hydrogen in a gas syringe or weigh the mass loss. Change concentration and temperature, then plot rate vs concentration and an Arrhenius graph.

A 3D school lab: zinc and copper strips in dilute sulfuric acid joined to an ammeter. See Zn²⁺ ions form, electrons flow through the wire, H⁺ ions make hydrogen on the copper and sulfate ions stay in the solution; name the electrodes.

What happens if you drop baking soda into ethyl or isopropyl alcohol? A 3D comparison lab with six liquids: only the acids fizz, water dissolves it, and in alcohol the powder just settles. Evidence checklist, particles, balloons and balances.

Electrotechnics, university level: a 3D three-phase generator feeding a wye or delta load. Exact phasor meters, √3, neutral current, power and power factor, capacitor-bank correction, broken neutral and the two-wattmeter method, with random worked problems.

A 3D grassland with foxes, rabbits, hawks, snakes, frogs and more. Remove, double or halve any species and watch the effects ripple through the food web. Predict-then-test challenges for middle school.

Four mice, one surprise: live R plus heat-killed S kills, and live S-type bacteria grow from the blood. 3D lab, microscope and molecular views, and Avery’s 1944 test showing the transforming principle is DNA.

HIIT vs long endurance training for 10 days, 30 days, 6 months and 1 year: a real 3D heart that remodels, artery wall and plaque, blood cells to scale, a live ECG and blood-pressure monitor, and how sudden cardiac arrest happens (CPR + AED).

An 8-scene 3D tour with subtitles and optional narration: cisternae, cis face receiving ER vesicles, glycosylation, trans face shipping, secretion and lysosomes, dictyosomes and the cell plate in plants, plus a real Golgi from electron tomography and a NEET revision quiz.

Healthy and scarred lungs side by side in 3D: airflow, how much less air stiff lungs can breathe in, a spirometry lab (restrictive vs obstructive), the scarred alveolus, compliance and a walk test. For Senior High School.

Touch a flame and follow the nerve impulse up the arm to the spinal cord, then along two routes at once: the reflex arc that pulls the hand away and the pathway to the brain where pain is felt. Live millisecond timeline, neuron and synapse zoom, order-the-steps games, a 3D body view and a quiz.