Physics 122: Please complete #35 and #36 from the problem set handout (2D Collisions).

Biology 122: We had a quiz today.  If you were absent, please arrange to write it when you get back.

Math 9: p. 358-359 # 5, 8, 9

Psychology 120:  We started the section on Operant Conditioning.  Please make sure you get the notes from class if you were absent.