One Cut STEM Shape Fun

One Cut STEM Shape Fun

My son and I watched mathematician Dr. Katie Steckles cut a square with just one cut. This is an idea that dates back to 1721 in Japan: The Fold and Cut Theorem. My son was fascinated by the one cut idea so we decided to try it out ourselves.

We started with the 1 cut square.

Cut Paper STEM Fun

Fold paper in half.

Cut Paper STEM Fun

Crease the paper you just folded in half.

Cut Paper STEM Fun

Fold into a triangle shape.

single cut to cut a square

Cut a straight cut from the corner.

1 cut square

Ta da! One cut square!

After watching her video, we decided to figure out the Betsy Ross star. It took my son three attempts to get it down so here it is in hyperlapse vide0.

I saw this Star Wars cut art on Childhoodist Instagram. My son loved it so this is our final cut paper STEM art project. These Star Wars cut paper snowflake designs are from Anthony Herrera Designs.

Star Wars Snowflake cutouts

They are not so easy to do and require a cutting board and an Xacto knife. He gave up on it saying that it was too hard but it might be fun for someone older.

Childhoodist star wars cut paper snowflake art

One Cut STEM Shape Fun

By Mia Wenjen, PragmaticMom


  1. Wow–that is very cool, Mia! Will have to try it out!

  2. Those are some intricate snowflakes. What an art! I used to love making them as a child.
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  3. What a great STEM activity!
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  4. Great bonding moment with your kids.

  5. Sarah

    This is amazing! Like magic. And I love, love that all you need is a piece of paper and some scissors.

  6. James

    Just tried out the origami paper folding star and loved it! Generally we like trying out crafts with simple requirements and get our ideas from Activity Village or Jumpstart Crafts. Through this post, we also found the fold and cut you tube video, which is fantastic!
    Thanks for the wonderful posts!

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