AC Circuits
Compare R, RC, RL, and RLC circuits: phase, impedance, resonance.
Learn STEM through interactive simulations and virtual labs
Learn STEM through interactive, multilingual simulations and virtual labs designed for classrooms and home learning.
All Simulations
Adsorption and Surface Purification
Explore how filters work! Add activated carbon to polluted water and watch how its porous surface absorbs harmful molecules.
Algebraic Identities by Area
Build squares and rectangles to see why (a+b)², (a-b)², and a²-b² work.
Amino Acids and Proteins
Build a protein molecule! Connect amino acids with peptide bonds and observe the formation of a long polymer chain, the basis of all life.
Ammonia (NH₃)
Explore the ammonia molecule. Learn how the lone electron pair of nitrogen turns the molecule into a trigonal pyramid and creates a dipole moment.
Angles and Protractor
Learn to measure the world in degrees! Estimate angles by eye, use a virtual protractor, and construct specific angles with high precision.
Animal Breeding and Selection
Become an animal breeder! Select rabbits for fur density and stamina, breed them over several generations, and create a new unique breed.
Animal Classification
Explore the animal kingdom. Compare vertebrates and invertebrates, identify classes by key traits (structure, habitat), and test your knowledge in mini-missions.