<span><strong>The effectiveness of implementing learning project on the quadratic function in high school</strong></span>

Project-based learning is one of the modern teaching methods utilizing student group intelligence to perform the learning task designed by the teacher. Through this method, students can acquire knowledge and develop necessary skills in learning such as communication, collaboration, critical thinking, and problem-solving. This paper aimed to investigate the effectiveness of implementing a learning project on the topic of the quadratic function at high school. A quasi-experimental method was conducted in one month involving two classes of tenth-grade students, consisting of an experiment and a control class (conventional learning). Qualitative and quantitative data were collected through student activity observation sheets, mathematics pre-test and post-test. This study could provide an effect of utilizing project-based learning and opportunities to implement learning projects in high schools.