Learn English vocabulary words through stunning interactive 3D fractal geometry visualizations. This free browser-based educational app by Charlie Shine, Ph.D. (Brain Scientist) displays animated 3D fractals including the Sierpinski Triangle, Menger Sponge, Fractal Tree, Sphere Fractal, and Octahedron Fractal while simultaneously teaching 30 English words related to mathematics, geometry, and fractal science — complete with IPA pronunciation guides and example sentences. No download or installation required. Works on all modern browsers on desktop and mobile. Powered by Three.js WebGL. Visit brains4goodlife.com for more free brain health and educational apps.