Resource Library
Find compelling classroom resources, learn new teaching methods, meet standards, and make a difference in the lives of your students.
We are grateful to The Hammer Family Foundation for supporting the development of our on-demand learning and teaching resources.
![A group of high school students sit at desks in conversation.](/sites/default/files/styles/scale_480/public/2023-10/AdobeStock_254378868.jpg?itok=f6YAphey)
Introducing Our US History Curriculum Collection
Draw from this flexible curriculum collection as you plan any middle or high school US history course. Featuring units, C3-style inquiries, and case studies, the collection will help you explore themes of democracy and freedom with your students throughout the year.
Territorial Changes of the Ottoman Empire 1817 - 1913
View a series of maps highlighting changes to the Ottoman Empire in green.
![Map of the Ottoman Empire Territory in 1817](/sites/default/files/styles/dynamic_stack_296_1x/public/2022-07/Territorial_changes_of_the_Ottoman_Empire_1817_800x600.jpeg?h=ccb565a9&itok=AN0JbOzo)
The Changing Geography of the Ottoman Empire (1300–1920)
Maps showing the growth and contraction of territory controlled by the Ottoman Empire from 1300 through 1920.