Step-by-step lessons where you watch wave packets tunnel through walls, electron clouds take shape, qubits rotate and algorithms find their answers. Built for students learning it and for teachers explaining it.
You don't need advanced maths. Each lesson builds on these three, and the visuals do most of the explaining.
Until it is measured, an electron has no single position. It has an amplitude at every place, the wavefunction ψ, and |ψ|² is the chance of finding it there. A qubit is the simplest case: just two amplitudes, α for 0 and β for 1.
Probabilities only ever add up. Amplitudes are arrows with a direction, called the phase, so they can also cancel. That is why electrons make interference fringes, why some barriers turn see-through, and how quantum algorithms make wrong answers disappear.
A wave confined to a region can only take shapes that fit, so its energy comes in steps: the “quantum” in quantum mechanics. It explains the sharp colours atoms emit, and why a trapped particle can never sit perfectly still.
Every lesson moves one idea at a time: a gate of a circuit, or a new fact about a wave. Go back, jump ahead, or change the input and watch everything update.
Wavefunctions are coloured by their phase. Amplitudes are drawn as dials: the size is the probability and the hand points along the phase. Each qubit is an arrow on the Bloch sphere.
Each lesson has knobs to turn. Wave lessons play out in time; circuit lessons have a Measure button that samples real outcomes and a link into the sandbox.
Topics are ordered the way most courses teach them. Each one stands on its own too.
Open a topic and put it on the projector: no accounts, nothing to install, nothing to prepare.