This is a graphic organizer that both explains each step in how to find the sum of an arithmetic sequence, given the first term, the number of terms in the sequence, and either the last term or the common difference. This organizer is useful for students new to the subject, struggling learners, and also any learners who need very concrete instructions for solving these types of problems. Highly recommended for differentiating in mainstream classrooms and for pull-out mathematics classes. During the corresponding lessons, I make these available to all my students. Graphic organizers are also useful for students who have missed lessons and who need to be able to, as independently as possible, catch up to the rest of the class.