sigmoid neuron vs NeuLearnND

This app explains how a single sigmoid neuron works. You can have some insight for neural network.

NueLearnND teaches you how neural networks actually work — not with walls of math, but with interactive visuals you can poke at. Start from scratch or skip ahead if you already know the basics. The app builds you a personalized lesson plan based on your level and what you're curious about, then walks you through concepts like forward passes, loss functions, and backpropagation one step at a time. There's a live Visual Lab where you can watch a real network train in front of you — adjusting weights, measuring error, and getting a little smarter each round. Plus a section on AI alignment, because understanding how these systems work also means understanding why steering them matters. No account needed. No ads. Just a clean way to build real intuition for the ideas behind modern AI.