In your Stars, Galaxies, and Cosmology textbook, you should have received a rebate coupon for a 'clicker' unit (a.k.a. Personal Response System, or PRS). You may copy the receipt for your textbook to send in the PRS rebate. You have until March 1 to send in the rebate.

Instructons for entering your student ID is given in the lecture notes. PLEASE DO NOT USE LEADING 00's.

Please bring your PRS unit to every lecture.

PRS Extra Credit

PRS Quiz Grades