Instructional Video
Khan Academy

Khan Academy: Cost Minimizing Choice of Inputs

9th - 10th
Learn about how firms determine the optimal combination of capital and labor in this video. [10:29]
Instructional Video
Sophia Learning

Sophia: Greek Temples: Lesson 2

9th - 10th
This lesson will explore some of the main features of ancient Greek temples. It is 2 of 3 in the series titled "Greek Temples."