This site is a resurrection of the old EricksonEducation website that I maintained to showcase my and my students work when I taught at Chicago State University but I am now including materials I used elsewhere as well. I am also resurrecting my old blog ericksoneducation.blogspot.com/ which went with this site. This is a work in progress and I will add additional materials intermittently.
I am just collecting various materials in the event that someone finds them useful for either learning or teaching. These days, with the advent of LLM based AI, these sorts of collections of written materials are probably less useful than they used to be, but having curated sets of problems and solutions gathered together probably still has some value, and they weren't doing anything but gathering digital dust on my hard drive. Besides, I always liked professors who put lots of free resources on their websites to help students learn.
Most of the materials are teaching and mathematics related at the high school or undergraduate level, but some of it is more advanced and research oriented. Some of the material is more cs related. Most of the materials are implemented in Mathematica. Finally, most of the materials are lesson sized, but I have included some larger projects as well.
Finally, it's no secret that I have an axe to grind about math education in the US, and I really don't understand how you couldn't. There is a lot to complain about. For starters, it is expensive and doesn't seem to be doing a very good job. In addition, I have a particular distaste for the role played by the math and math education establishment in the miseducation of underrepresented students, mathematically talented students, and especially the intersection of these two sets -- which is not the null set!