Fibonacci and Fractals Links

I had the pleasure of being the co-presenter of a workshop called “Fibonacci, Fractals, and the Common Core Math Standards” at the VCTM conference at Saint Michael’s College on Friday. My partners were Professor Tim Whiteford of Saint Michael’s College and Laura Sommariva, a math teacher at Colchester High School.

The three of us shared what we’d done with students during a fifth grade field trip to Tim’s famous Penny Arcade. Here is Tim’s original write-up about that.

As promised, for the participants in our workshop and others, here are the resources we used to teach about fractals and Fibonacci numbers.

The Fractal Foundation Fractivities. How to draw Sierpinski triangles, do fractal cutouts and more.

Worksheetworks. Create your own graph paper and triangle paper.

On Being a Plant, Part 1, the 6 minute Vi Hart video we watched. She explains Fibonacci numbers, and demonstrates how to count the spirals on pinecones, draw realistic pinecones, and use graph paper to make a golden spiral.

Laura teaches summer math classes for elementary students in Switzerland. She has photos of her students here doing wonderful, related activities like building giant tetrahedrons out of mini marshmallows.

Have fun!

Hyperbolic Space

Poincaré disc model of hyperbolic space from fractalsciencekit.com

Margaret Wertheim gave this interesting lecture called "The Beautiful Math of Coral".

  

She does a thorough job of explaining the math of hyperbolic space here on her website, the Institute for Figuring. There are photos of the gorgeous crocheted coral reefs, too.

In her words...

The Crochet Reef Project was inspired by the technique of hyperbolic crochet originally developed by Dr Daina Taimina, a mathematician at Cornell. In 1997 Dr Taimina discovered how to make models of the geometry known as "hyperbolic space" using the art of crochet. Until that time many mathematicians believed it was impossible to construct physical models of hyperbolic forms; yet nature had been doing just that for hundreds of millions of years. It turns out that many marine organisms embody hyperbolic geometry in their anatomies - among them kelps, corals, sponges, sea slugs and nudibranchs. Thus the Crochet Reef not only looks like a coral reef, it draws on the same underlying geometry endemic in the oceanic realm.

There are very good reasons why marine organisms take on hyperbolic forms: this geometry is a marvelous way to maximize surface area in a limited volume, thereby providing greater opportunity for filter feeding by stationary organisms.

An unidentified folded coral in Flynn Reef, part of the Great Barrier Reef, near Cairns, Queensland, Australia. By Toby Hudson.

Crochet works because it is an easy way to increase stitches in each row to produce ruffling. I haven’t crocheted since childhood, but I do remember increasing stitches when I wasn’t supposed to. Maybe I should try a coral reef.