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You are here: Home / Archives for sacred geometry toys

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Geometric Inspiration and Education

Thursday, 21 April 2022 by Bruce Rawles

geometric art, color-filled intersections of simple 2D shapes shapesReflecting on the growth – explosion, really – of information available to us online compared to what we had access to just a few decades ago, I recalled that in the early 1970s when I was an undergraduate electrical engineering student at UC Davis, California, I used the card catalog in a long row of tidy wooden cabinets at the Shields Library – a building which covers an entire block of the campus – to look up everything I could find (at that time) on the Golden Ratio, Golden Number, Golden Section, Divine Proportion, Phi (ø) or Tau (τ) Proportion, Sacred Cut, Extreme and Mean Ratio, etc. and other synonyms for the ubiquitous (1 + √5)/2 ≈ 1.6180339887… value. This fascination was my response to a gift of two books – both with references to the golden ratio – from my mother who indirectly introduced me to this enthralling subject which later was popularized with the term “sacred geometry”:

  • Secrets of the Great Pyramid by Peter Tompkins
  • This Living Earth by David Cavagnaro

I found a few dozen books that led to other books and on and on into the mystical realms of the intersections of mathematics, ornamentation, art, music, architecture, history, and above all – mind. … But after checking out those books, I felt I had somewhat exhausted the more obvious references to this topic in this library. … Not anymore!

Fast forward a half-century; now googling Sacred Geometry, as of today (21 April 2022) we get a staggering 45 million results for this niche topic (including my evergreen minimalist GeometryCode Introduction to the subject now way past overdue for a revisit and update) and 481 million for the Golden Ratio!

The same curiosity still remains in my mind: What can be counted on that does NOT change? The laws of mathematics in general and geometry, in particular, seem relatively stable, fortunately, at least within the context of the Cartesian space-time paradigm. When I was in high school, I read Education and Ecstasy by George Leonard and I realized that to really dive deep and learn immersively, one needed to be motivated, inspired or at least have their curiosity seriously piqued or their assumptions about life challenged. Exploring some of the ideas that these readings opened up for me was enough!

Now there are a multitude of online offerings that can motivate young and old alike to explore esoteric topics like interconnectedness (e.g. quantum entanglement), geometric symbolism and synchronicities, and so much more. Another vital element that has a multiplying effect is FUN!

Here are a few quickly-found resources for educators and explorers in this realm (including teachers, home-schoolers) and philosophers of all stripes:

  • A simple but engaging animation showing basic 2D geometries morphing from one to another:
    Shapes – Learn 2D Geometric Shapes – The Kids’ Picture Show (Fun & Educational Learning Video)
  • 10 Geometric Art Explorations (Study measurement, area, fractions, and more!) … The graphic of color-filled intersections of simple 2D shapes on this page was adapted from the image below the “6. Frac-Geo-Bot” section on this page.
  • … for about 23 million more links, try googling “geometric art science toys videos”
  • or try these categories on the GeometryCode website: coloring books for adults, sacred geometry art, sacred geometry books, sacred geometry coloring books, sacred geometry toys … just for starters

Enjoy! :-)

Filed Under: 2D Geometries, 3D Geometries, coloring books for adults, Numbers and Proportions, sacred geometry art, sacred geometry coloring books, sacred geometry toys

Educational Books and Toys: RedHen Update!

Tuesday, 28 December 2021 by Bruce Rawles

It’s been a while since we featured RedHen Books and Toys with their unique assortment of hard-to-find educational materials, toys, games, and books such as Bradford Hansen-Smith’s circle folding videos, books, and supplies, Zometool, Froebel gifts, and much more! For math or geometry teachers, homeschoolers, or anyone enthused about the study and practice of geometry – or wanting to propagate that enthusiasm – Red Hen has an excellent selection for kids spanning a wide age range.

To get a sense of the generous variety of available products, I would suggest clicking on the “All Items” link in the Red Hen website left sidebar, and then scrolling through a page at a time to not miss any of the unique and interesting items; the samples below are just a small handful of what you’ll find! Here are a few of the many unique items that make great gifts or educational catalysts year-round. I’m a huge fan of Zometool! Spirograph was a big positive influence in my childhood a half-century ago, so I’ll feature those two first. Enjoy!

Zome Crystallography kit

Zome Crystallography kit


Spirograph Design Tin Set

Spirograph Design Tin Set


Geometric Coloring Cards

Geometric Coloring Cards


Kaleidograph Flora

Kaleidograph Flora


Rolligo

Rolligo


Mathematics with Geoshapes

book cover: Mathematics with Geoshapes


Archimedes Square Stomachion puzzle

Archimedes Square Stomachion puzzle


Fold a Soccer Ball

Fold a soccer ball from paper circles


Tetrahedron Octahedron Cube poster

Tetrahedron Octahedron Cube poster

Filed Under: 2D Geometries, 3D Geometries, Archimedean Solids, Platonic Solids, sacred geometry art, sacred geometry books, sacred geometry toys

How to make a model of Nested Platonic Solids with Zometool

Monday, 29 November 2021 by Bruce Rawles

I recently disassembled a favorite Nested Platonic Solid model (for transport) and decided it might be helpful to take a few photos of the process and present them in reverse order, to help anyone wanting to use Zometool to build this unique geometric nest of the 5 regular polyhedra attributed to Plato. About a decade ago, I made this Infinite Recursive Animation of these Nested Platonic Solids and zoomed in for 3 full cycles of the loop to show the relationships between the five solids and some of the details that might be missed otherwise, so this post will complement that animation. Here’s a still frame from that animation that shows the 2 outermost polyhedra (the octahedron in light green and the icosahedron in dark blue):

frame from nested platonic solid animation showing octahedron-icosahedron golden-ratio vertex relationship
frame from nested platonic solid animation showing octahedron-icosahedron golden ratio vertex relationship

Here are all the Zometool struts and hubs you’ll need:

blue and green struts and hubs needed to make the Nested Platonic Solids model using Zometool

… and now we start by assembling the innermost polyhedron, the tetrahedron from these shorter green struts and white Zometool hubs:

green struts and hubs needed to make the outer octahedron: Nested Platonic Solids model using Zometool
green struts and hubs needed to make the inner tetrahedron model using Zometool

… adding the smaller blue struts and the ubiquitous white Zometool hubs to the green tetrahedron makes a blue cube (a.k.a. hexahedron); here we can see the √2 edge length proportion:

2 polyhedra; cube outermost - Nested Platonic Solids using Zometool
2 polyhedra; cube outermost – Nested Platonic Solids using Zometool

Now adding these “roof caps” to each of the 6 square faces of the cube…

example of roof tents defining edges of dodecahedron outermost: Nested Platonic Solids model using Zometool
example of roof tents defining edges of dodecahedron outermost: Nested Platonic Solids model using Zometool

… we get a dodecahedron; see also page 229 in Sacred Geometry Design Sourcebook for an “exploded view” drawing in the lower-left corner of the page for additional reference.

3 polyhedra; dodecahedron outermost: Nested Platonic Solids model using Zometool
3 polyhedra; dodecahedron outermost: Nested Platonic Solids model using Zometool

Now assemble 12 pentagonal pyramid caps …

pentagonal pyramidal caps making icosahedron: Nested Platonic Solids model using Zometool
pentagonal pyramidal caps making icosahedron: Nested Platonic Solids model using Zometool

… and attach to each of the 12 dodecahedron faces, to make it’s dual, the icosahedron:

4 polyhedra; Icosahedron outermost: Nested Platonic Solids model using Zometool
4 polyhedra; Icosahedron outermost: Nested Platonic Solids model using Zometool

Finally, make these asymmetrical structures (with golden ratio prorportions) from the 2 larger sizes of green struts…

… and attach these to the icosahedron vertices to complete the outermost polyhedron, the octahedron:

All Five Polyhedra - Octahedron outermost: Nested Platonic Solids model using Zometool; note the golden ratio division of octahedral edges defining icosahedron vertices
All Five Polyhedra – Octahedron outermost: Nested Platonic Solids model using Zometool; note the golden ratio division of octahedral edges defining icosahedron vertices

Enjoy! :-)

Filed Under: 3D Geometries, Platonic Solids, polyhedra, sacred geometry art, sacred geometry toys, sacred geometry videos

Quantum Sierpinski Fractals and Dodecahedral Bubbles

Sunday, 24 February 2019 by Bruce Rawles

A couple of fun geometry videos:

Scientists Trapped Electrons In a Quantum Fractal

Fun video with 1.58 dimensional tiny fractals: Scientists Trapped Electrons In a Quantum Fractal


A video with a particularly nice dodecahedral bubble …
including a bubble resembling a Reuleaux Tetrahedron.


Nancy Bolton-Rawles beach bubble

… and a nearby beach bubble photo taken by my wife, Nancy.

 

 

Filed Under: 2D Geometries, 3D Geometries, Fractal Geometry, Platonic Solids, polyhedra, sacred geometry art, sacred geometry physics, sacred geometry toys

Reuleaux triangles (and related shapes) revisited – neat video!

Tuesday, 27 February 2018 by Bruce Rawles

Trion-re - Michael R. EvansTrion-re exploration, anyone? Check out this very cool video about a curved polyhedron with only 3 faces (with lots of 3D animations worth waiting for) and related work connected to the Flower of Life and its ‘buiding block’ (or at least easily discernable element) the Reuleaux Ttriangle. The 3D equivalent is the Reuleaux Tetrahedron

“THE SPACE BETWEEN” – a documentary on the work of Michael R. Evans directed by Zoe Sandoval. UCLA School of Theater, Film and Television.

(Thanks to Richard N. for alerting me to this video and interesting work via a FaceBook post reply!)

 

Filed Under: 2D Geometries, 3D Geometries, polyhedra, sacred geometry art, sacred geometry toys, sacred geometry videos

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