A tiny offline-first interactive tool for one specific, well-documented physiology misconception: how pressure gradient and resistance actually determine blood flow.
Between 95% and 99% of physiology and medical students answer this wrong, even after lectures on the topic. This tool exists because reading the equation does not fix the misconception. Manipulating it does.
Drag two handles on a live tube diagram: one controls the pressure gradient, one squeezes the tube to change resistance. Watch particles speed up and slow down in real time as Q = ΔP / R plays out visually instead of staying an abstract formula.
Then it tests you with the exact scenario students get wrong most often: what happens to flow when resistance doubles but pressure stays the same. You predict first, then see the real answer.
Standard physiology teaching does not fix this misconception for most students. The interactive, hands-on version does, based on documented interventions using physical tubing rigs with adjustable clamps. This is that same interaction, in an installable offline app instead of a lab setup.
Built for students without reliable internet or the ability to pay for AI subscriptions to get this kind of interactive explanation. Works fully offline after first load.
Live: https://cvs-flow.netlify.app
Or clone and open index.html directly, no build step, no dependencies.
Plain HTML, CSS, and vanilla JS. No frameworks. Service worker caches everything for offline use. Installable as a PWA on Android and iOS.
MIT