Material from the CAs.

• Recitation problems from week 2: RecWeek2
• Recitation problems from week 3: RecWeek3
• Recitation problems from week 4: RecWeek4
• Recitation problems from week 5: RecWeek5
• Recitation problems from week 6: RecWeek6
• Recitation problems from week 7: RecWeek7
• Recitation problems from week 8: RecWeek8
• Recitation problems from week 8: RecWeek9