## #MathArtChallenge 9: Comparing Origami Butterflies

The Challenge: Make two different sizes of origami butterflies and then see what you notice and wonder about your pieces!

Materials Needed: At least two different sizes of square paper. (Can be obtained from non-square paper if you ask nicely.)
Math concepts you could explore with this challenge: angles, proportions/ratio (particularly between length, area, volume)

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## #MathArtChallenge Day 4: Hyperbolic Geometry

The Challenge: Fold your very own Hyperbolic Plane from a simple piece of paper!

Materials Needed: A square piece of paper. Youtube instructional video below!
Math concepts you could explore with this challenge:  Algebra (how many folds per stage?), angles, counting, exponents, functions, geometry, Hyperbolic planes, proportions/ratios, sequences, symmetry, topology, vertices/intersections

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