## #MathArtChallenge Day 55: Hyperboloid (George Hart & Elisabeth Heathfield)

The Challenge: Build your own Hyperboloid

Materials needed: Skewers, Tiny rubber bands (I was able to get skewers at the grocery store and polybands from Target)
Math concepts you could explore with this challenge: Angles, geometric construction, lines, symmetry, topology, vertices/intersections

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## #MathArtChallenge Day 53: Origami Firework from ONE piece of paper

The Challenge: Make the Origami Firework, but this time, only use ONE PIECE OF PAPER.

Materials Needed: A long piece of paper, patience, and the knowledge that I BELIEVE IN YOU.
Math concepts you could explore with this challenge: angles, origami, symmetry

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## #MathArtChallenge Day 52: Crossing Lines

The Challenge: Drawing only straight lines where all lines must cross all other lines, how many can you draw?

Materials Needed: Paper, pencil, maybe a ruler.
Math concepts you could explore with this challenge: angles, calculus, lines, slope

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## #MathArtChallenge Day 48: Squidge’s Challenge

The Challenge:

Materials Needed: Paper, pencil, colors
Math concepts you could explore with this challenge: angles, counting, geometry, lines, vertices/intersections

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## #MathArtChallenge Day 47: Origami Cube with Windows

The Challenge: Fold an origami cube with windows. Possibly make multiple. (This could be a great collaborative activity for a class!)

Materials needed: 12 pieces of paper, cut to rectangles with a 1:2 ratio.
Math concepts you could explore with this challenge: angles, geometry, origami, sequences, symmetry, vertices/intersections

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## #MathArtChallenge Day 46: Origami Firework – Yami Yamauchi

(You may have picked up on this, but I tend to do the more involved things on the weekends when I have a bit more time. This one was HONESTLY pretty reasonable until the last step, which took me about 5 finicky minutes to get together. YOU CAN DO THIS. And it is SO SATISFYING when it’s finally together.)

The Challenge: Fold yourself an origami firework.

Materials Needed: 12 congruent paper squares, patience.
Math concepts you could explore with this challenge: angles, orgiami, symmetry, vertices/intersections

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## #MathArtChallenge Day 45: The Lotfallah Mosque Dome

The Challenge: With a compass or with tech like Geogebra or Desmos Geometry, to recreate the Lotfallah Mosque Dome design.

Materials Needed: compass, straight edge, colors. You could also use graphing software for this.
Math concepts you could explore with this challenge: angles, circles, geometric construction, geometry, Islamic geometry, lines, polygons, proportions/ratios, symmetry, vertices/intersections

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## #MathArtChallenge Day 42: Origami Octahedron

The Challenge: Fold you own octahedron from 6 square pieces of paper.

Materials Needed: 6 square pieces of paper.
Math concepts you could explore with this challenge: angles, geometric construction, geometry, origami, symmetry, vertices/intersections

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

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.
Math concepts you could explore with this challenge: angles, geometric construction, geometry, islamic geometry, lines, vertices/intersections

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