This study aims to examine the 5th grade students' motivation and the influence of the movivation on their science learning with ARCS strategies. To achieve the goal of the study, two groups were selected from an elementary school at Changwon, in Korea: Treatment Group (TG) and Control Group (CG). TG was trained for applying ARCS strategies, whereas CG were taught in a traditional manner for 13 weeks. Before and after the treatment, both groups answered the questions in the form of PALS in order to know their general motivation of teaming science. In the middle of the treatment, they were also tested to sort out their motivation, which might be occurred during the class, by CIS. After the period of the 13 weeks, the students' motivation were finally measured after their teaming with ARCS strategies. The results are as follows: First, there were significant differences between TG and Cf when motivation was measured by PALS. Second, there was also significant contrast between TG and CG in CIS, which was conducted during the class. TG gained more scores on the ARCS motivation, attention, relevance, confidence, and satisfaction. Third, It has been found that most students recognized the ARCS as one of the positive and interesting teaming strategies. To conclude, the results above show that the ARCS strategies would be very helpful for the 5th grade students to improve their teaming motivation as well as to appeal their interest on their science loaming.