coding

Code of the Rings

While tinkering with my tree ring code, I created a simpler yet mesmerizing adaptation. Essentially I added a loop, some random multipliers, and changed to radian mode. Sine and cosine are so incredibly beautiful and full of infinite play and wonder. Please play with the code below by clicking to ch

coding

Goodbye Red Oak

I often run for mental downtime and stress-relief. On a recent run, I found one of my favorite trees blown over. This tree grew in a cemetery with broad branches and roots consuming the neighboring headstones. This red oak had brought me so much joy. Before I could get to the stump, the park had […]

coding

Foggy Orbits

After covering the unit circle today, I created Foggy Orbits as a quick sketch. Below is the CodePen and above is a GIF. I hope to add this to pre-calc activities with parametric equations eventually. See the Pen jOrJezv by Sophia (@fractalkitty) on CodePen.

coding

Swirled Series Challenge

I decided to join Craig S. Kaplan’s Swirled Series Challenge. I played the last two nights and have some draft GIFs below. I don’t have a ton of time, but it’s stuff like this that relaxes me at night. I look forward to seeing what people come up with. I still need to export a […]

coding

Draft of Knotty Math Tile Code

Here is a rough draft of Knotty Math tile code. Code was adapted from Shaw Wan’s tangram code on CodePen. I am hoping to adapt more tile designs for play. This will not work on touch screens/phones – I’ll have to contemplate an app for that. I am just learning… Drag the tiles below and […]

Miscellaneous - interviews, ideas, and more

Mathober Complete!

I enjoyed doing Mathober this year and plan to post a new set of prompts for next year. I always feel like I grow as a person with these short, yet focused, activities. Please join in next fall. Thanks to those that joined in on twitter. Special thanks to John Golden who did every day […]

coding

Mod Fibonacci

Finite Melodies for an Infinite Sequence A few years ago I asked myself how I could play the Fibonacci sequence on the piano. I found that if I divided the Fibonacci sequence by the number of keys I wished to play, I got a set of numbers that would infinitely repeat. I tested this observation […]

GIF

The Point? Dimensions

“The Point of Evolution” started as a Mathober doodle and led to this GIF. Dimensions are fun – what do you see? what do you notice? Side Note: I talk about dimensions when covering combining like terms. One analogy – A 3D banana can’t combine with a 2D banana (or whatever noun seems to go […]

coding

Laser Pointer Googly Eyes

I am glad I can amuse myself. This is a simple script that I may integrate into an Algebra class for looking at points on a line. If you want a webpage version for students, click here. If you want code, see below. Click to make more eyes, and you might get freaked out if […]

coding

Fractal Ink to Code

After drawing the fractal prompt today for Mathober, I played around to make it in p5js. Below is the Codepen to play with. I almost feel like it should have a surprise when they align…maybe for another day. See the Pen fractal_Mathober by Sophia (@fractalkitty) on CodePen.

coding

Lune of Hippocrates Clock

After drawing the Lune of Hippocrates yesterday for Mathober, I played around to make a Lune clock today. Below is codepen (p5 is here). I use a lot of these small projects for students to play with in an hour of code group. This one may not be as popular as projecting memes and cats […]

coding

Fantasy Maps to Planets

For those that have created fantasy maps using previous posts here, in classes, or elsewhere in Worldbuilding, D&D, or art, I created a small script to see your maps as spherical planets. You can click to rotate and move the mouse off the canvas to have rotation. You may want to draw a map that […]

Miscellaneous - interviews, ideas, and more

Mathober Doodles

This year, I hope to do mathy sketches as inspired by John Golden’s tweet. Initially this post was working off of prompts from another website, and after learning of some controversy, I have decided to rename and recenter this post and month to Mathober. A learner brought up the issues with a tradem

coding

Random Math Poetry

I think the challenge here is to find the math that can fit the poetry… If you want a browser tab version, click here. You can also edit it and change the words as well. Below is the codepen: See the Pen OJNKQmE by Sophia (@fractalkitty) on CodePen.

Math Birds

The Magpi

GIF

From the Void

Hexagon and parametric spiral play. I find myself doodling with code lately more than with my pen. I have one more scripting algebra post, but feel like I have a much larger library for a pre-calc set of activities. Thoughts? The GIF is too large for this site or twitter, so I stashed it on […]

Scripting Algebra

SA9: Quadrant Play

This Scripting Algebra (SA) activity looks at quadrants, mouse location, and interactive art p5.js. This activity assumes that the skills from SA1-SA8 were introduced (if-else, logical operators, random(), text(), rect(), variables, loop, pow, for, functions, translate, modulo, etc.). This activity

coding

Parametric Play!

Here are some simple animations with parametric equations. What you see below is a function and its inverse. If you click, you will get another semi-random equation. See the Pen qBZgZvW by Sophia (@fractalkitty) on CodePen.

GIF

Expanded

With commas: Without commas:

GIF

Foiled by a Foil

I couldn’t resist this GIF for my algebra students. Foiling can be such fun!

GIF

Moiré GIF: by Opal

My daughter started playing with moiré in procreate after I fiddled with it in a previous post. You know we breathe math in our home. She wanted to share:

coding

Parallel to a Parabola

I received a question today about what curve is parallel to a parabola. I sat for a minute and realized that it wasn’t another parabola. It required parametric equations (at least if you wanted to keep it simple). That of course lead to code: See the Pen jOqzMJb by Sophia (@fractalkitty) on CodePen.

GIF

Menger Sponge Cat in Space

High res: Low res:

GIF

Hex-a-Sierpinski

So I doodled and was pleasantly surprised when Sierpinski-like triangles formed. I am sure that a million people have discovered this before me, but I felt like I found a magic portal. And that lead to coding (of which is currently a mess, and I will post later). And one more version:

Comics

No 5-second rule…