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.
Nineteenth Century Evolution Chart
This late-nineteenth-century chart shows the supposed racial stages of evolution from ape to European that many scientists supported.
![Late nineteenth century chart showing six images displaying the supposed stages of racial evolution, beginning with an ape and ending with a white man.](/sites/default/files/styles/dynamic_stack_296_1x/public/2022-06/Nineteenth_Century_Evolution_Chart_FH229388.jpg?h=bb8c9f74&itok=e0e8jHDz)
Tyler Atkins' Twitter Post
On August 10, 2014, teenager Tyler Atkins posted these images on Twitter accompanied by the following tweet: “#IfTheyGunnedMeDown which picture would they use.”
![A Black teenager in a suit looks off in the distance while holding a saxophone.](/sites/default/files/styles/dynamic_stack_296_1x/public/2022-07/TylerAtkinsTwitterPhoto1_FH232563.jpg?h=c9f93661&itok=pOaKvN9w)