This study aimed to: 1) assess the impact of a STEAM education learning package on grade 10 students' science process skills, 2) evaluate its effect on their learning achievement concerning the physical properties of materials, and 3) gauge the students' satisfaction with the learning package. The participants were 13 grade 10 students from a public school in Thailand, selected through convenience sampling. The study utilized a STEAM Education Learning Activity Package, a Science Process Skills Test, a Learning Achievement Test, and a Learning Satisfaction Questionnaire as instruments. Data analysis involved calculating mean scores, standard deviations, effectiveness indices (E.I, E1/E2), and normalized gains. Results demonstrated significant improvements in both science process skills and learning achievement related to the physical properties of materials. Additionally, the learning package enhanced students' satisfaction with their learning experience. These findings suggest that the STEAM education learning package could be a valuable tool for improving science education at the elementary school level.