Best of History Web Sites is " an award-winning portal created for students, history educators, and general history enthusiasts"; sites are rated for usefulness and accuracy
https://besthistorysites.net/
History Matters: "the U.S. survey course on the web". Designed for high school and college teachers of U.S. history
http://historymatters.gmu.edu/
U.S. Department of Education has some good U.S. history resources for schoolteachers https://teachinghistory.org/
U.S. History teacher resources from the National Archives
Genealogy for kids: article on how children can participate in genealogical research, with links to helpful sites
http://www.genealogyspot.com/features/kids.htm?newslib
A teacher's guide to the Holocaust: An award-winning site about the Holocaust, packed with information, photographs, movie clips etc.
http://fcit.usf.edu/Holocaust/
A visual sourcebook of Chinese civilization: designed to add to the material teachers can use to help their students understand Chinese history, culture, and society
http://depts.washington.edu/chinaciv/
The British Museum has an extensive site on ancient Egypt
http://www.ancientegypt.co.uk/menu.html