We’ve been studying the Industrial Revolution and the birth of capitalism in my sophomore global studies class. That means we’ve been spending a lot of time with Adam Smith, but for the sake of expedience, I imagine, very little on David Ricardo. Certainly, Ricardo is one of the most important of the political economists.
But perhaps not for the high school curriculum. In the event you might need it (it might make a good short introduction to a lesson on Smith, Thomas Malthus, or James Mill, if you teach those thinkers), here is a Cultural Literacy worksheet on David Ricardo.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.