THE CHALLENGE: Make you very own flexagon. Inspired today by this from @ayliean

I made an 8 sided one using this book from Paul Jackson

Skip to content
## #MathArtChallenge Day 40: Flexagons

## #MathArtChallenge Day 39: Flowered Dodecahedron

## #MathArtChallenge Day 38: Chirality

## #MathArtChallenge Day 37: Pascal’s Triangle Patterns

## #MathArtChallenge Day 36: Islamic Geometry 10 Point Star

## #MathArtChallenge Day 35: Probabilistic Plants

## #MathArtChallenge Day 34: Similar Right Triangle Patterns.

## #MathArtChallenge Day 33: Möbius strip klein bottle

## #MathArtChallenge Day 32: Megan’s Spirals

## #MathArtChallenge Day 31: MÖBIUS

THE CHALLENGE: Make you very own flexagon. Inspired today by this from @ayliean

I made an 8 sided one using this book from Paul Jackson

THE CHALLENGE: Suggested by Clarissa Grandi, to cut out and construct this flowered dodecahedron. Mine below followed by links to instructions.

https://howaboutorange.blogspot.com/2011/11/how-to-make-3d-paper-ball-ornaments.html

MATERIALS NEEDED: Cardstock and a printer (or a lot of patience to sketch the pieces out by hand, which I suppose is definitely doable.)

THE CHALLENGE: Play with chirality.

MATERIALS NEEDED: ???

THE CHALLENGE: Start by making (or use mine below) a Pascal’s Triangle. Then shade in some pattern of values. I suggest starting with even/odd numbers, and then perhaps multiple of 3, 4 etc.

MATERIALS NEEDED: Pascal’s triangle.

Spoilers below

Continue reading “#MathArtChallenge Day 37: Pascal’s Triangle Patterns”

THE CHALLENGE: To create this star.

MATERIALS NEEDED: In an ideal world, you have a compass and ruler, but sans compass, you just need to do your best to divide a circle into 10 equal pieces. One fabulous participant did this:

For Instructions, I think you’re probably best off with Samira Mian here:

Although I did attempt to do this thread on twitter wherein I forgot that pentagons and hexagons are different things (I hadn’t had my coffee, it’s not my fault!)

THE CHALLENGE: Today from @ayliean on twitter.

MATERIALS NEEDED: Paper, pencil, something to randomize (die, coin, whatever)

I rolled a 6 sided die to determine how many branchings and an 8 sided die (octahedron) to determine the kind of plants on each branch. It was a little loosey-goosey, and my plant is a bit more fantastical than hers, but it was fun! #mathartchallenge

THE CHALLENGE: Create a large number of similar right triangles using the technique described in this video from Mark Kaercher. Then play!

MATERIALS NEEDED: Scissors, paper, ruler?

THE CHALLENGE: Crochet 2 möbius strips, of opposite chirality. Then sew their edges together to get your very own klein bottle!

MATERIALS NEEDED: Crochet or knitting skills, yarn.

Here’s some more about klein bottles:

THE CHALLENGE: Color a spiral of numbers. Or 3. Or fifty. (This one gets quite addictive.)

MATERIALS NEEDED: A spiral chart. Here are 2 options:

It’s also very easy to make your own spiral chart:

There are a ton of great links and examples and instructions over at Megan’s blog: https://mathybeagle.com/?s=spiral

AND many other spiral options in this excel sheet she put together. https://docs.google.com/spreadsheets/d/1kkWgXkAU2VhmMvbCBlZoCdGmJb5c8Id3fead-ALT0M4/edit#gid=352245601

The #MathArtChallenge is just a fun, simple way to engage our brains during this time of unease. All tasks are low tech: paper, pencil, maybe string. Nothing fancy. I would LOVE to see what you come up with. Post on social media with the hashtag #MathArtChallenge!

THE CHALLENGE: If you have a nerd in your life, they’ve probably introduced you to Möbius strips. If you haven’t been introduced, my apologies for having failed you this far.

1) Take a strip of paper

2) Make a half-twist

3) Tape together

How many edges?

Then cut down the middle.

Then if you want to get really crazy, get yourself a separating zipper and some sewing materials and head on over to http://woollythoughts.com/mobius.html

Reveal below, but only watch if you’ve played first!