This Classroom Action Research (CAR) aims to enhance students’ learning motivation through the implementation of the Snowball Throwing learning model. The study was conducted at SMAN 1 Palu with 35 students of class XI MIPA 6 as the research subjects. The CAR was carried out in three phases: pre-action, Cycle I, and Cycle II. Data were collected through observation and a learning motivation questionnaire. The findings revealed that students’ learning motivation in the pre-action phase was categorized as “fair” with a percentage of 54%. After the implementation of the Snowball Throwing model in Cycle I, students’ motivation increased to 72% (“high” category), and in Cycle II it further improved to 87% (“very high” category). These results indicate that the Snowball Throwing model is effective in improving students’ learning motivation, as it actively engages them in discussion and collaborative activities, making the learning process more interactive and enjoyable. The implication of this study is that teachers may employ the Snowball Throwing model as an alternative instructional strategy in Biology learning to foster students’ learning motivation.
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