This study explores the effectiveness of differentiated instruction based on multiple intelligences in elementary schools, aiming to reduce classroom boredom and enhance students' learning attitudes and concept mastery. The research, conducted at a private Islamic elementary school in collaboration with three class teachers, utilized the Design and Development Research (DDR) method, specifically the ADDIE model, to design and implement differentiated instruction. The study found that students were able to maximize their logical-mathematical, language, kinesthetic, interpersonal, and intrapersonal intelligences through this approach, leading to a joyful and meaningful learning atmosphere. The differentiated instruction was particularly effective in enhancing students' mastery of science concepts, especially in remembering, understanding, and applying. The results suggest that further development of this model is warranted to examine its effectiveness in thematic learning for students with varying achievement levels. The study also highlights the importance of creating an engaging and supportive learning environment to foster students' multiple intelligences and improve their academic outcomes.This study explores the effectiveness of differentiated instruction based on multiple intelligences in elementary schools, aiming to reduce classroom boredom and enhance students' learning attitudes and concept mastery. The research, conducted at a private Islamic elementary school in collaboration with three class teachers, utilized the Design and Development Research (DDR) method, specifically the ADDIE model, to design and implement differentiated instruction. The study found that students were able to maximize their logical-mathematical, language, kinesthetic, interpersonal, and intrapersonal intelligences through this approach, leading to a joyful and meaningful learning atmosphere. The differentiated instruction was particularly effective in enhancing students' mastery of science concepts, especially in remembering, understanding, and applying. The results suggest that further development of this model is warranted to examine its effectiveness in thematic learning for students with varying achievement levels. The study also highlights the importance of creating an engaging and supportive learning environment to foster students' multiple intelligences and improve their academic outcomes.