CK-12 Foundation
Journalism 101
How do people express their rights of free expression through the press? Journalism 101 is the perfect combination of modules for 11th and 12th graders to learn about First Amendment rights, reporting and writing skills, digital...
BW Walch
Creating Linear Equations in One Variable
The example of two travelers meeting somewhere along the road has been a stereotypical joke about algebra as long as algebra has existed. Here in this detailed presentation, this old trope gets a careful and approachable treatment....