Math History

In-depth info of Biographies of 2680 different mathematicians, with more being added. Pictures of about 2300 of the mathematicians. A collection of 130 History Topics. Mathematicians of the Day page.
https://mathshistory.st-andrews.ac.uk/index.html

Euclid of Alexandria, was a Greek mathematician, founder of geometry, who flourished in Alexandria, Egypt, almost certainly during the reign of Ptolemy I (323–283 BC).
https://en.wikipedia.org/wiki/Euclid

Famous Problems https://web.archive.org/web/20180211011058/http://mathforum.org/isaac/mathhist.html

A list of the greatest and most influential mathematicians – included Thales, Euclid, Descartes, Isaac Newton, Nash, Carl Gauss, Leonhard Euler and Turing
https://www.biographyonline.net/famous-mathematicians/

History of Mathematics on Wikipedia
https://en.wikipedia.org/wiki/History_of_mathematics

History of math subjects, chronological list of mathematicians, regional math
https://mathcs.clarku.edu/~djoyce/mathhist/

Mathematics on Wikipedia https://en.wikipedia.org/wiki/Mathematics

The Story of One – A documentary about the history of the number one https://www.youtube.com/watch?v=ojqfwtwitMI
Free worksheet to download for the documentary https://www.tes.com/teaching-resource/terry-jones-story-of-one-video-with-worksheet-6260693

Women in Mathematics has biographies of women in mathematics, illustrates the numerous achievements of women in the field of mathematics, and has additional resources about women in mathematics.
https://www.agnesscott.edu/lriddle/women/women.htm