Collect textbook HW from periods 2, 4, 7

Assign HW- all students take the Moodle quiz (The Tools of Astronomy) by Monday night (3/28)
Warm-up: astronomy pic of the day

Periods 1, 2:
-Fill out EM spectrum handout together (posted last week)
-Spectroscopy PPT
-demo a prism (use overhead projector light)
-if time worksheet from 28.1- Tools of Astronomy

Period 4:
-Spectroscopy PPT
-demo a prism (use overhead projector light)
-worksheet from 28.1- Tools of Astronomy

Period 7:
-PPT (from yesterday) on the Tools of Astronomy
-watch internet video of the ISS
-worksheet from 28.1