Miniproject: Excel to produce simple Neural Network (Google Sheets can be used)

In a previous post, Experiments in Teaching Neural Networks , examples of how to build a neuron in Excel and how to train a single neuron were shown and these examples were taken from exercises the students build in the class.

This year a new activity was produced that uses the ideas from the build a neuron in Excel activity but does this multiple times in the same worksheet, so we have three neurons. The exercise then connects the outputs from two of them to the inputs of a third neuron building an XOR gate (which a single simple neuron can not implement), the video below shows all of the stages.

Does it have to be in Excel? No, it works as well in Google Sheets, as do the others build a neuron in Excel and how to train a single neuron.

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