One of the persistent challenges among elementary pupils is solving mathematical word problems, which are essential for developing critical thinking and application skills in mathematics. This quasi-experimental study aimed to determine the effectiveness of the MATH-WAVE (Mathematics Advancement through Technology and Hands-on Web-based Activities for Vital Engagement) intervention in enhancing the word problem-solving skills of Grade 4 students. The MATH-WAVE approach integrated interactive technology tools and contextualized web-based activities designed to engage learners and improve their comprehension of mathematical problems. The intervention was implemented with 30 Grade 4 pupils from Maniki Elementary School SPED Center during the 2024–2025 academic year. A researcher-designed pre-test and post-test were administered to assess the participants problem-solving performance before and after the intervention. Pre-test results indicated that the students demonstrated low proficiency in solving word problems. After the implementation of MATH-WAVE, students post-test scores improved significantly. A paired sample t-test revealed a statistically significant difference between pre-test and post-test scores, t(29) = 22.60, p < .001, indicating a substantial gain in problem-solving skills (Cohens d = 4.04). These findings suggest that the MATH-WAVE intervention effectively enhances elementary learners mathematical problem-solving abilities. The results support the integration of technology-assisted and hands-on learning strategies into the mathematics curriculum. It is recommended that educators adopt similar innovative approaches to support learners engagement, understanding, and performance in mathematics.