Japanese Culture For Foreigners: 19 Insider Secrets You Need To Know

https://iwillteachyoualanguage.com/learn/japanese/japanese-tips/japanese-culture-for-foreigners

A Comprehensive Guide to Japanese Culture

Guide to Japanese Culture

History of Japan

https://www.japan-guide.com/e/e641.html

I would like to recommend two more websites:

https://courses.lumenlearning.com/boundless-arthistory/

This website is very useful to know how to do lesson plans of Japanese History

https://www.cfr.org/japan-constitution/japans-postwar-constitution

This website can help teachers understand modern Japanese society better