1) This document is an e-LKPD or electronic student worksheet on the topic of arithmetic sequences and series created by Diyah Istriani for 11th grade students.
2) It contains 5 problems for students to solve individually or in groups to actively learn the concepts of arithmetic sequences based on the 2013 curriculum.
3) The author recognizes limitations in the worksheet and welcomes constructive feedback to improve it, hoping it will benefit all parties.