NOTE: These lectures were originally recorded for the Astronomy course and notebook, so the page numbers that I cite in the lectures won't match. Go by what is indicated in the blue type above each image of the lecture.
(1) Pages 108, 109
(3) for the next two videos (3a and 3b) we'll skip page 110 in the Physics Workbook and instead use pages 88. 89, and 90 from the Astronomy Lab Manual