It's good to see more efforts like this. So far, only two notebooks are real. Only Linear Algebra and Calculus are available now. (Looking forward to more!)

In the meantime, consider HELM [0]

> HELM - Helping Engineers Learn Mathematics - is a major 3-year curriculum development project to support the mathematical education of engineering students. The project is sponsored by the Higher Education Funding Council for England (HEFCE) through phase 4 of the Fund for the Development for Teaching and Learning (FDTL4).

> HELM Workbooks

> This page allows you to access all currently available HELM workbooks (in pdf format).

Some are interactive. [1]

In STACK/Moodle Quiz format.

[0] https://nucinkis-lab.cc.ic.ac.uk/HELM/helm_workbooks.html

[1] https://stack-assessment.org/CaseStudies/2021/HELM/

Thanks to pillars for originally posting this site here.

https://news.ycombinator.com/item?id=45099747