The three-month quasi-experimental study examined the impact of Purple Mash, an educational website, on grade four students’ academic achievement and perception. The study involved 28 participants, divided into control and experimental groups. Initial assessment scores were similar between the groups, but after the intervention, the experimental group showed a significant increase in post-test scores compared to the control group. The experimental group achieved an average score of 89.9, while the control group scored 77.2. Additionally, the students reported high levels of satisfaction with the interactive learning experiences provided by Purple Mash. Based on these findings, the study recommends the development of dedicated websites for each lesson to enhance accessibility and improve academic achievement and student perception in information and communication technology (ICT) courses. The integration of various data sources, such as pre- and post-test scores, classroom observations, and interviews, supported the credibility and dependability of the research findings. This thorough approach allowed for a deeper understanding of ICT class dynamics and the establishment of robust conclusions. The findings of this study provide compelling evidence of the positive impact of Purple Mash, a web-based mathematics learning platform, on primary school students’ mathematics achievement.