This research is a qualitative description research with the subjects being students of grade XI Science 1 SMA Negeri 1 Tasifeto Barat for the 2017/2018 academic year. The results showed that the application of the ATI learning model in general can increase students' motivation to learn biology. This is known from ATI learning tools, ATI learning observation sheets and the results of filling out learning motivation questionnaires. Based on the results of the study, it is known that the ATI learning model applied in class XI Science 1 SMA Negeri 1 Tasifeto Barat is quite effective in increasing motivation in learning Biology. This is indicated by students starting to be diligent in facing biology tasks, tenacious in facing difficulties learning biology, showing interest in various problems, maintaining opinions and not easily letting go of something they believe in, and independent in working or studying biology