## 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.  We cut ours on a Helix laser cutter.  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

## Mini Unit Circle Twitter Storm!

I sent a mini unit circle to Dr. Alex Kontorovich, and he posted a short video.  Previously I posted a video on this and Ralph Pantozzi retweeted and we got 10,000 views till I accidentally deleted the post. This time Dr. Kontorvich’s followers really grabbed it and it went around the globe and in less than 3 days had over

We are always excited when makers and maker spaces make our math models!  Patrick Benfield outfitted some 8th graders with Quadrants (or Clinometers) and put this post on Instagram (click on photo below).  Be sure to scroll through and also check out Patrick’s other work.  You can find the files to make this here. View this post on Instagram Making

## Take and Make: Mini Unit Circle

We made a little video of the mini unit circle with Radian piece and it got some interest on our twitter feed.  We tidied up and updated the file as much as possible and have three versions available: link to SVG Mini Unit Circle File link to Adobe Illustrated Mini Unit Circle File link to Corel Draw 2017 file version

## Take and Make: Number Slider

This is a great project.  Viyang Shah shows how you can expand from just adding and subtracting.  Here are the files – Corel Version 17, Adobe Illustrated, and an SVG!  Please let us know if you have trouble with access.  Happy Making! First version by Paola Garcia.  Improvements and Cuisenairre adaptations based on suggestions from Jo Boalers facebook group YouCube

## Take and Make: Mirror Book

Michelle Tat1 Comment

Mirror Book Files  Make all the regular polygons using just this “book” and a straight line on paper. You can also make stars and intricate symmetrical designs using objects or pictures drawn on paper. Simply laser etch the wooden and acrylic pieces, hinge the two wooden pieces together with Gaffer Tape, and glue the acrylic mirrors to the inside of your

## Take and Make: Sierpinski Triangles

Previously we shared a Take and Make blog on Koch Fractals. We have another fractal shape for you called the Sierpinski triangle!  It has the overall structure of an equilateral triangle. This would be a good challenge for someone learning to use geometry software whether its design like Corel Draw or math like Geogebra.  We are using midpoints and we

## Take and Make: Packing Cubes

If you have a Makerspace and are looking for something fun to make, we have an idea for you. The packing cube is a really cool and interesting puzzle. You just need to etch the cardboard folds and fold into pyramids. It’s surprising how the pyramids can all fit inside the cube. It’s a good challenge to figure out how