duo_skills amybphdFull size 677 × 762 pixels Motivation in Many Languages: How Duolingo Supports Competence for Language-Learners An example of how the Duolingo lessons are sequenced by difficulty. Previous image Next image Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *CommentName* Email* Website Save my name, email, and site URL in my browser for next time I post a comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.