Scouting out videos about symmetries does catastrophic things to one's youtube recommendations.

Every fiber of my being was expecting the fourth line to be "Panama."

For my future classroom use, I made a collection of Set card images in new colors.

Looking back over some old calc/precalc materials, I was pleased with the quality of this matching question. Nothing super special, but it works the concept of average rate of change well, I think.

Thanks, no, I didn't mean that. But seriously, thanks for the suggestion.

If you take two unit squares stacked one atop the other, and rotate one through an angle of \(\theta\) about its center, the area in the intersection of the two squares is an octagon. I found it a pleasant exercise to express the area of the octagon in terms of \(\theta\).

Nothing special, just a somewhat pleasing (I thought) tiling I drew.

Abstract algebra is a very serious subject and one must, at all times, endeavor to uphold the timeless gravity of this hallowed matter.

I need to make a playable version of this for the browser, but it is a fun puzzle to see how many convex polygons you can form by assembling the seven puzzle pieces here, tangram-fashion. They're drawn on a grid of 30-60-90 triangles.

I have a habit of referring to "eigenstuff" and "eigencritters" in linear algebra, and a student illustrated this.

One should probably not enjoy oneself so much when writing distractors for multiple choice questions. And yet, I do.

I'm too tasteful to include the heart eyes on the actual slide for class, but really, one must acknowledge the beauty of this stuff.

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