Prework: Preview Chapter 21 (skim pages 473-484 ). Attempt problems 2, 8 and 12 and come to class prepared to discuss the issues you had with the concepts and/or problems.
Submit your initial work on the problems here: http://www.quia.com/quiz/6170780.html
Submit your classwork here: http://www.quia.com/quiz/6173134.html
Play with alpha levels on this virtual manipulative: https://www.geogebra.org/m/WFsTpcph
Play with alpha levels: https://www.geogebra.org/m/aYXuzejD