Searching "Donovan A. Johnson" on the broadly interdisciplinary Google Scholar
yields 112 references to the book, on teaching math.
The 37 page pamphlet is readily available on the Internet Archive (2 versions)
looking for Donovan A Johnson ( at
> On 19 Jul 2020, at 18:41, Papirfoldning.dk via Origami
> wrote:
>
> I got my copy of "Donovan A. Johnson: Paper folding for the mathematics
> class" here:
>
- Mensaje de "Papirfoldning.dk"
Thanks a lot, Hans, for sharing such an interesting discovery!
Since O1-O7 are independent axioms, and O4 is Euclidean (you can
construct a line through a point, perpendicular to another line), it
seems that Donovan's postulates cannot construct all
Den 19. jul. 2020 kl. 10.04 skrev Matthew Gardiner :
Do you happen to have a link to the publication?
The whole text can be downloaded from ERIC site. Here's the link:
https://eric.ed.gov/?id=ED077711
The introduction page is difficult to read because of the background texture.
All the
>
> This might be of some historical interest for origami and mathematics.
I’d say it most definitely is! Very interesting find.
> The usual set of origami axioms are acknowledged to be formed by
> Huzita-Justin-Hatori (https://langorigami.com/article/huzita-justin-axioms/).
Aha! So is it
Hello.
As a challenge, our origami group ASVOR (vallecaucanian origami
association) in Cali, Colombia, folded a crane. Pass the paper and make a
step.
https://www.youtube.com/watch?v=x4RrLcfbPeU
Jose Tomas Buitrago.
