<![CDATA[The students’ability level of solving the problem is still low. Regarding the importance of having the problem-solving skill itself, there should be alternative methods to support the students to solve the problem. The aim of this research is to examine the increased level of problem-solving skill on a plane figure and a solid figure essay by Assurance, Relevance, Interest, Assessment, Satisfaction (ARIAS) learning model for grade V students of SD Negeri Tunggulsari II No. 179 Surakarta academic year 2017/2018. This research conducted in two cycles with the teacher and 29 students from grade V as the subject. The data were collected by interview, observation, test, and document review. Data validaty is tested by content validity,triangulation of source and technique.The results show that the use of ARIAS learning model improving the problem-solving skill on a plane figure and solid figure essay. It can be proven by the increasing percentage of classical completeness on the pre-cycle of 17,24%, increased to 27,59% in the first cycle and increased to 86,21% in the second cycle. The conclusion of this research is the ARIAS learning model can improve the problem-solving skill of plane figure and solid figure essay on grade V students of SD Negeri Tunggulsari II No. 179 Surakarta academic year 2017/2018.]]>
