A 16 question training circuit for limits. Includes piecewise, radical, and complex rational expressions. Students use conjugates, common denominators, factoring and expanding. Tabular and graphic approaches included as well. The student begins on the first problem, finds his/her answer in another box and then works the adjacent problem as his/her #2. The student continues in this manner until the worksheet is complete and he/she matches up to the original problem. Self-checking!
I don't include keys because the best way to prepare to help your students is to work it yourself first. Feel free to comment with questions and I'll answer promptly.