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Math for fun and glory
Course: Math for fun and glory > Unit 1
Lesson 3: HexaflexagonsFlex Mex
Might as well. Created by Vi Hart.
Want to join the conversation?
- Why can't there be a flex mex with more sides? Then it would be more tasty.(169 votes)
- Yes but it would fall apart very quickly!(102 votes)
- Is it just me or does that look really good?(20 votes)
- How many should I eat in one day? Because I ate like ... :)(10 votes)
- lol. that is kinda funny. um.. probably enough that you do not want to eat anymore but it will not give you a stomach ache.(0 votes)
- Whats that red stuff she put on at? The others were Sour Cream, Guacamole, beans, and cheese. 1:57(3 votes)
- how do you make the tortilla into a tortillagon? my sis and I tried and it ripped! please help! P.S. did I spell TORTILLA right?(2 votes)
- I am afraid that I didn't have any better luck with the tortillagon, but I couldn't let your question go unanswered! I would suggest trying to get your hands on a large, soft, but strong tortilla and trying again. You can usually get really nice ones at Walmart or Safeway. Practice makes perfect!
And yes, you spelled tortilla correctly!(8 votes)
- Can anyone tell me how to make a more sided hexaflexagon?(4 votes)
- nope. I do not understand how to make them(1 vote)
- Is it possible to write an article showing how to make one?Because the videos are REALLY fast!(3 votes)
- These websites might help you.
http://en.wikipedia.org/wiki/Flexagon
http://britton.disted.camosun.bc.ca/hexahexa/hexahexa.html
http://www.maths.uq.edu.au/~infinity/Infinity%2012/hexaflex.html
I agree with you, the videos are fast and the hexaflexagon is hard to make. But just remember: you can learn anything, even how to make hexaflexamexagons. :)
--Blue Leaf(2 votes)
- How do you make the equilateral triangles?(3 votes)
- The exact same way as you do it on paper, just be extra careful.(2 votes)
- Since a trihexaflexagon can be folded so that 3 sides can be shown, couldn't she fold in the beans and cheese and add more on top?(2 votes)
- She could, But like she said, "The tortilla is real thin and fragile'' and so if you tried to fold that in it would be to much to hold and it would break.(2 votes)
- At, if you don't flex at all would you avoid the mess? 2:20(2 votes)
- Oh yeah, I guess just eat it the way it is without flexing it in...(2 votes)
Video transcript
It begins with a large tortilla. Cut a strip from the
middle where it's widest. And free this long rectangle
from the useless wedges that surround it. This is how we start our
journey towards creating the perfect food. The hardest part is folding
an angle of equal thirds. But if you folded
a piece of paper into thirds for a
letter or a pamphlet, you know the principal,
approximate, and then adjust until you reach equality. In the case of the tortilla,
to get an equilateral triangle, you fold an angle
rather than an edge. Be sure your folds
meet at a point. One corner of a triangle. Unlike paper, this soft
and delicious tortilla is forgiving, adjusting
easily rather than creasing and crumpling. Continue folding one
triangle on top of another. Pinch each fold to
give it a crease. 10 triangles are necessary. Remove the extra. Arrange the strip of
triangles into a hexagon. Note that the folds
naturally want to go the same way
you creased them. This will help you to arrange
the overlap so that it is symmetric, woven together
in the same way you would fold the flaps on top of a box
to support each other. In paper, I might use
9 triangles, and then a piece of tape. For tortilla, use 10 and
attach the first to the last. Score the tortilla lightly
with a knife to ruff it up. And then use your fingers
to wet it with water. The water combines with
the flour in the tortilla. And by pressing the triangles
firmly to one another, they are effectively
glued together. Thus, a tortilla
hexaflexagon is created. It can be flexed by pinching two
triangles together and pushing in the opposite side to get
a flat three armed shape. Then opening up the inside. However, it is imperfect. For it is not yet delicious. Luckily, there are several
sophisticated tools with which to
remedy this problem. The first of which is guacamole. I start with the easily
spreadable ingredients, which can be folded flat
into the hexaflexagon. Flex it by lifting the three
parts with the flappy folded creases and fold
them to the inside. Then the bottom
can be opened up. And the flexagon is
once again ready to be piled with delicious
ingredients. The precious guacamole being
stowed safely within the folds. After adding beans and
cheese, your hexaflexamexagon is ready for consumption. To eat, flex only halfway and
bite the delicious exposed triangular pockets of
flex mex perfection. As you can see, the
ingredients tend to leak slightly out of
the folds of the flexagon. This is expected
and unavoidable, as the nature of the burrito is
to be a delicious leaking mess regardless of whether it is
cylindrical or hexaflexagonal. As your next flex mex project,
consider the humble crane guarding her flavorful nest.