art spam: sketchbook #4 (2019)

I've skipped some pages and I'm just doing thumbnails on a few of these because there was a lot of filler crap at this point.

I found another Captain America.


Math doodles of stuff I wanted to memorize for work:

The method for calculating square roots by hand and a visual proof of the angle sum formula.
sin (α + β) = sin α cos β + cos α sin β
cos (α + β) = cos α cos β - sin α sin β

Bunnies!

I totally forgot that I went through an animation phase, but this was 100% intended to be animated, so I went ahead and made the gif from it today.
Hand-drawn animated icon...

After that were pages and pages of just patterns and squiggles which I'm not bothering to post, but you can see the back side of one of those pages here.

I only list ballpoint on this page, but it looks like I also shaded it with pencil, which I know was a thing I sometimes did.


I seem to have given up on listing media at this point, but this looks like ballpoint, alcohol marker (hair) topped with glitter gel pen, and the face is shaded in pencil.