Scratch

kayybee · 2012-10-10 23:25:00

Has anyone made one before?
They're hexagons that turn inside out and stuff.

Vi Hart has a video (or two) on them (currently) so if you don't know what they are you should watch the videos. Along with every other ones of her videos.

Discuss hexaflexagons, Arthur Stone (right?), Martin Gardner, and Vi Hart.

zubblewu · 2012-10-10 23:38:35

I love them! big_smile . I just made another a few days ago (just a trihexaflexagon)

thebriculator · 2012-10-10 23:54:17

I love those!

I've made some from a template before, and some from origami.

btw, I like ViHart's videos as well!

zubblewu · 2012-10-10 23:59:25

You should change the topic name to flexagons, not hexaflexagons wink

Laternenpfahl · 2012-10-11 00:10:24

yay vihart
also im not that good at them

kayybee · 2012-10-11 01:44:29

zubblewu wrote:
You should change the topic name to flexagons, not hexaflexagons

I was originally going to call it like national mathematics month for martin gardener or something like that but then i'm not quite creating the month, and the whole month is just about hexaflexagons....... so.

zubblewu · 2012-10-11 01:45:55

kayybee wrote:
zubblewu wrote:
You should change the topic name to flexagons, not hexaflexagons
I was originally going to call it like national mathematics month for martin gardener or something like that but then i'm not quite creating the month, and the whole month is just about hexaflexagons....... so.

Hmmmmmm. In that case yeah... But flexagons are more general and much more inclusive, so I though that. Oh well, it doesn't really matter tongue

Mokat · 2012-10-11 08:12:24

ViHart's videos are cool smile
We watched a couple of the pi ones for math class.

mythbusteranimator · 2012-10-11 08:31:48

Sounds interesting!

Hardmath123 · 2012-10-11 09:02:04

Are these the same as kaliedocycles?

transparent · 2012-10-11 17:33:37

Perhaps...sounds interesting, though. :3

777w · 2012-10-11 17:34:20

my brother saw a video on those and wont stop talking about them :B

banana500 · 2012-10-11 17:38:28

Aww yeah, I love Vi Hart! big_smile

Molybdenum · 2012-10-11 17:38:40

These are very fun. I've made quite a few, and even convinced my teacher to use them in class tongue

transparent · 2012-10-11 17:39:00

I just looked them up and man that's awesome.

kayybee · 2012-10-11 17:59:11

transparent wrote:
I just looked them up and man that's awesome.

So are the rest of vi's videos.

Quick, someone prove .999...=1!
Just one to let others post some too though smile
Great reason: because I said so.

Hardmath123 · 2012-10-11 20:36:51

0.99... * 10 = 9.99... = 9+0.99...
Let 0.99... be x:
10x = 9+x
9x = 9
x = 1
0.99... = 1
QED

soupoftomato · 2012-10-11 21:10:05

Hardmath123 wrote:
0.99... * 10 = 9.99... = 9+0.99...
Let 0.99... be x:
10x = 9+x
9x = 9
x = 1
0.99... = 1
QED

I was just going to say
the fraction of a repeated decimal is the number over how many 9s you need.
so .99 . . .
is 99/99 and 99/99 is one.

kayybee · 2012-10-11 22:22:58

Between any two different real numbers there is at least one more between them.
1,2: 1.5, 1.4, etc.
1,1.1: 1.05, 1.04, etc.

Now find a number greater than .99.. and less than one.
Just add a five to the end and you get halfway. 0.99...5?
Wait but the five doesn't exist because you'll never get there cause its behind an infine number of 9s. So it's still .99... There's no number between them, which must mean they are the same number.

There are several more. Like the 1/3 proof.

transparent · 2012-10-12 09:19:23

I want to learn how to do this. :3

mythbusteranimator · 2012-10-12 09:25:52

soupoftomato wrote:
Hardmath123 wrote:
0.99... * 10 = 9.99... = 9+0.99...
Let 0.99... be x:
10x = 9+x
9x = 9
x = 1
0.99... = 1
QED
I was just going to say
the fraction of a repeated decimal is the number over how many 9s you need.
so .99 . . .
is 99/99 and 99/99 is one.

1/3 = 0.33333333......
1/3 * 3 = 0.99....... AND 1

1/9 = 0.111....
1/9 * 9 = 0.999999.... AND 1

kayybee · 2012-10-16 22:42:43

transparent wrote:
I want to learn how to do this. :3

They're actually really fun but I always get it stuck in some 3D figure and have trouble getting it back tongue

thebriculator · 2012-10-16 23:52:50

"stuck" in 3D?

you mean it can be 2D at some point?

I think I'm using different flexagons than you.

could you give me a link?

zubblewu · 2012-10-16 23:55:02

They're always 3-D anyways tongue . And if you have a 2 dimensional object that is whole in the third dimension... (quantum and theoretical physics big_smile )

kayybee · 2012-10-17 01:27:43

thebriculator wrote:
"stuck" in 3D?

you mean it can be 2D at some point?

I think I'm using different flexagons than you.

could you give me a link?

Yes, hexaflexagons are normally 2D figures. I'd post a link, but I'm on my iPod right now... I can do it tomorrow or you can search vi hart on YouTube and watch her hexaflexagons videos.

Scratch

archived forums

#1 2012-10-10 23:25:00

Hexaflexagons

#2 2012-10-10 23:38:35

Re: Hexaflexagons

#3 2012-10-10 23:54:17

Re: Hexaflexagons

#4 2012-10-10 23:59:25

Re: Hexaflexagons

#5 2012-10-11 00:10:24

Re: Hexaflexagons

#6 2012-10-11 01:44:29

Re: Hexaflexagons

zubblewu wrote:

#7 2012-10-11 01:45:55

Re: Hexaflexagons

kayybee wrote:

zubblewu wrote:

#8 2012-10-11 08:12:24

Re: Hexaflexagons

#9 2012-10-11 08:31:48

Re: Hexaflexagons

#10 2012-10-11 09:02:04

Re: Hexaflexagons

#11 2012-10-11 17:33:37

Re: Hexaflexagons

#12 2012-10-11 17:34:20

Re: Hexaflexagons

#13 2012-10-11 17:38:28

Re: Hexaflexagons

#14 2012-10-11 17:38:40

Re: Hexaflexagons

#15 2012-10-11 17:39:00

Re: Hexaflexagons

#16 2012-10-11 17:59:11

Re: Hexaflexagons

transparent wrote:

#17 2012-10-11 20:36:51

Re: Hexaflexagons

#18 2012-10-11 21:10:05

Re: Hexaflexagons

Hardmath123 wrote:

#19 2012-10-11 22:22:58

Re: Hexaflexagons

#20 2012-10-12 09:19:23

Re: Hexaflexagons

#21 2012-10-12 09:25:52

Re: Hexaflexagons

soupoftomato wrote:

Hardmath123 wrote:

#22 2012-10-16 22:42:43

Re: Hexaflexagons

transparent wrote:

#23 2012-10-16 23:52:50

Re: Hexaflexagons

#24 2012-10-16 23:55:02

Re: Hexaflexagons

#25 2012-10-17 01:27:43

Re: Hexaflexagons

thebriculator wrote:

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