The purposes of this study were: To examine the effects of low-cost mini science experiment kits on Thai 6th graders' science learning achievement; To investigate how these kits impact Thai 6th graders' Science process skills; To explore their influence on Thai 6th graders' scientific mindset The participants were 111 sixth-grade students from three public schools in a rural province in Northeastern Thailand. The study utilized four key instruments: (1) a set of learning management plans (2) a learning achievement test, (3) a scientific process skills assessment, and (4) a scientific mindset assessment. The results showed that students achieved an overall learning achievement score of 74.71%, a scientific process skills score of 93.56%, and a scientific mindset score of 96.62%, all exceeding the predetermined criteria. These findings indicate that Low-Cost Mini Science Experiment Kits effectively enhance science learning outcomes, encourage hands-on engagement, and support skill development in resource-limited educational settings. The results of the study contribute to the field of science education by demonstrating how affordable, accessible learning tools can promote educational equity and improve science instruction in underfunded schools.