Here’s a fun one! Inspired by a conversation with Chris Daniels of Public Math. He said roll paper around a cylinder and cut on an angle to get an ellipse and produce a sine wave. So we did! And you can too. Then you can make a roller from ellipses, reflect your sine curve and roll the elliptical roller along

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## Awesome Math Making Ideas from Other People – Napiers Bones

Here’s an excerpt of a twitter conversation. Day before yesterday Aida wrote to get access to some of our files and ideas. Yesterday she made this amazing version of Napiers Bones that is in the National Archeological Museum in Madrid. Today I’m inspired by her project and want to know more about this version and I want to see that

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## Take and Make: Hinged Parabola Stretcher

Super simple and yet kind of cool. You need a machine screw, a wing nut, some scrap wood about 4″x.5″, and some stretchy elastic. Directions and Files Here. Check the video on Twitter to see how it moves. Article from American Mathematical Association here. Also if you don’t want to make from scratch, we could send you the parts. Fill

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## Take and Make: Laser cut 3d Tangrams

Viang Shah created his own Corel Draw file to make this design. You are invited to make your own design files or use his which are posted in Corel, AI and SVG formats.

## Take and Make: Pythagorean Puzzles are a hit in Middle School

These two Pythagorean Theorem Puzzles were a hit with Paola Garcia’s middle school students. Paola mentioned that some students who are not as facile with pen and paper exercises excelled with the wooden puzzles and that overall everyone enjoyed them. Laser cutting files are posted here. These do not have the solutions etched into the board

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## Austin Nature and Science Center Fall Fest Star Party

One person can make a real difference by bringing math into a family event at the Nature Center. Emmie Chng was working solo with an enthusiastic gathering of families. They learned how to make a plumbline, how to use a quadrant, how to make one at home and why we look to the north star to find latitude. Here’s the

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## Advice from the MOXI Museum on Golden Ratio Exhibit

Comments from the MOXI Museum in Santa Barbara. They liked the Golden Ratio Calipers and decided to make their own and set up a self guided exhibit. They’ve got some great advice for any museum interested in doing this too. “I have in fact used your files in a crude way and brought out some ratio calipers in my museum’s

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## MathHappens @ Austin Museum Day- You are Invited!

In this photo Ximena Mercado Garcia has items from each Museum Day math station on the table to share with Univision and their viewers. Las matemáticas también pueden ser divertidas. ¡Únete y descúbrelo tu mismo! Sarah Bacca is sending this note with all the details to teachers, principals and schools. We hope everyone gets the word! Dear Math Enthusiasts,

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## Blank Fractals + Vallejo Library kids = mathematical creativity!

We cropped out two more kiddos, but this one in the middle who is too busy working to lookup for photo kind of says it all. What a great note as well. Libraries are a wonderful place to play with some math. Greetings to you both, I hope you’re both doing wonderful. This week we’ve been doing art projects with

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## Take and Make: Mathematical Origami

I want the files now! We attended the MOVES Conference at the Museum of Mathematics in New York this summer. Main topic? Mathematical Origami. There is a lot going on with capabilities to weaken materials and facilitate folding with lasers and other precision devices. Robert Lang and Eric Demaine are both experts and innovators in this area and they spoke

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