I found this a while ago, but still haven’t got around to trying it out. The picture looks like it should be a really good heart model, and if it means that we don’t have to use any of our budget to buy a working heart model, well it must be good. Right?
The equipment is all stuff that you can easily find at home (recyclable material, too) so also easy that you could save enough to get a whole class or STEM group to do. And, of course, there’s the option of doing it at home just for fun or extra credit work.
This is one we need to try in the summer!