L2 L3 Tuesday, May 31B May 31, 2011Uncategorized20102011, l2, l3, starsMrs. Nork Ch 30- Star Brightness.ppt Download this file Period 1: -Watch Universe: Life and Death of a Star and take notes Periods 2-7: -PPT on Star Brightness LAB Period 3: -Video- Life and Death of a Star