The purpose of this study is to describe the results of the results of the analysis of the ability to understand social science concepts in the material "economic activity" when using video learning with an online system in class IV.3 SDN Pakujajar CBM. The research method used is descriptive qualitative method. Data collection techniques used were interviews and documentation. The writer acts as an instrument of data collection.Data analysis techniques used are according to Miles and Huberman, namely data reduction, data display, and conclusion drawing / verification. The research subjects used were grade IV.3 students in the 2019/2020 school year. The number of students is 25 people. The results showed that the ability to understand social science concepts in economic activity material, 7 students got the highest score, while 1 student got a grade less than KKM. All indicators can be mastered by students, but there are several categories, namely high to very high. The very high category can be combated as much as 96% in the exemplary indicator.