## #MathArtChallenge 91: 3D Cube Cut-Outs

The Challenge: Find some materials that will allow you to create one of those beautiful 3D 3-letter (or shape? Follow your heart) cut-outs. I used a potato.

Materials Needed: Something you can cut up. Potatoes, crafting foam, apples… food, I think would work well here.
Math concepts you could explore with this challenge: angles, geometry, perspective, polyhedra, symmetry

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## #MathArtChallenge Day 65: Penrose Triangle

The Challenge: Create a penrose triangle.

Materials needed: Pencil, paper, etc.
Math concepts you could explore with this challenge: angles, isometric grids, perspective, vertices/intersections

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## #MathArtChallenge Day 64: Anamorphic Raintangle (from woollythoughts.com)

The challenge: Create a rainbow and get it reflected in a curved surface to reveal a rectangle. All credit here to Woolly Thoughts! (They have wonderful things for you to play with there.)

Materials needed: I crocheted mine, which was a fun puzzle to get an even rainbow. They have knitting instructions on their website, but you could just as easily draw this with markers. I used tinfoil as my reflective surface wrapped around a nail polish remover bottle. I bet you all get more creative than myself.
Math concepts you could explore with this challenge: circles, geometry, perspective, proportions/ratios

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## #MathArtChallenge Day 38: Chirality

The Challenge: Play with chirality. Chirality refers to the rotation of a specific object. The knots above have opposite chirality.

Materials Needed: This is wide open. Spinning video? Knots? Twisted candy? Be creative!
Math concepts you could explore with this challenge: knot theory, pespective, topology, vertices/intersections

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## #MathArtChallenge Day 15: Isometric Illusions

The Challenge: Create an illusion using isometric lines.

Materials Needed: Isometric Grid paper You can print some or you can create some (that just takes a bit of patience), pencil and ERASER. This challenge is best done as an exercise in erasing, changing and play. You can see in my time lapse below just how much erasing I did and I’ve done this kind of thing many times before. Be gentle with yourself.
Math concepts you could explore with this challenge: Angles, geometric construction, geometry, isometric grids, perspective

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## #MathArtChallenge Day 3: Isometric Cube Cutouts

The Challenge: Draw a cube by connecting 3 rhombi (see below). Then use lines parallel to those of the rhombi to embellish the cube.

Materials Needed: writing surface, writing utensil, straight edge, colors
Math concepts you could explore with this challenge: geometric construction, isometric grids, lines, perspective, polygons, polyhedra, topology, vertices/intersections

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