> Den 19. jul. 2020 kl. 10.04 skrev Matthew Gardiner <[email protected]>:
> Do you happen to have a link to the publication?
I got my copy of "Donovan A. Johnson: Paper folding for the mathematics class"
here:
https://www.amazon.com/gp/offer-listing/B003TV5BBK/ref=tmm_pap_new_olp_0?ie=UTF8&condition=new&qid=1595147259&sr=1-1-791c2399-d602-4248-afbb-8a79de2d236f
In addition to geometrical constructions with origami, it has a brief
recreations section with hexaflexagons, cube (waterbomb), pop-up dodecahedron,
and the flat part of a Fröbel star. The flexagons and the pop-up are better
described by Martin Gardner in his Scientitic American collection books. It is
unclear if Johnson saw Gardner's articles or if they have a common, prior
source. Gardner is not the original author of either of these models.
> Ps. Minor toot: I’m about to release a run of my new robotic origami kits:
> called oribokit :)
> There will be some available for postage internationally. More info soon.
I'll look forward to that.
Regards,
Hans
