What I like about this is that it's e-learning having nothing to do with screen or keyboard. Rather, it's a laser scanner and a 3D printer, and what it produces is a series of models of an onion growing, so you can see for yourself the stages of growth. If a garden is slow music, as Michael L Umphrey says, then this is the score.
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] [![Image from the website](https://downes.ca//files/images/post_51630.jpg)