<![CDATA[Teaching integer operations in elementary schools encounters several challenges, notably students' difficulties in applying mathematical concepts to real-life situations. Moreover, the integration of technology in elementary school mathematics worksheets remains limited. This study aimed to evaluate the validity, practicality, and effectiveness of Project-Based Learning (PjBL) Liveworksheets in improving learning outcomes for fourth-grade students in number operations. The participants of this study were 15 fourth-grade students at Mekar Elementary School. The research utilized a Research and Development approach, following the ADDIE model. Evaluations by experts yielded the following scores: media experts rated the worksheets at 81.5 ("Good"), material experts at 85.5 ("Good"), and the practicality assessment scored 83.5 ("Good"). Before the implementation of the PjBL Liveworksheet, students had an average score of 70.6, which increased to 79 post-implementations. The n-gain score of 0.30, classified as "Medium," indicates a moderate improvement in student learning outcomes. These findings demonstrate that the use of PjBL Live Worksheets has a positive impact on student learning outcomes, enhancing their enthusiasm for collaborative project work and their ability to engage with digital worksheets. Integrating such innovative tools into the curriculum could significantly contribute to better educational practices and improved student performance in mathematics]]>
