❄️ Crayon Snowflake Lab: Grow a Six-Fold Ice Crystal with Temperature and Humidity, Draw It in Wax Crayon

Kids grow a snowflake on a hexagonal-lattice cellular automaton (vapour diffusion, freezing threshold, attachment): temperature and humidity sliders on a simplified Nakaya map give plates, columns, needles or stellar dendrites. Redraw the flake in red and green wax crayon on paper, hang it as an extruded refractive 3D crystal in a window scene and save it to a gallery that falls as snow.