This study aims to describe information in online learning on students' mathematics learning outcomes in the teaching and learning process at home due to COVID-19. This research uses descriptive qualitative research. The population taken from the study were all second grade students of SD Negeri 091320 Raya Tongah Pematang Raya. The samples for this study were parents and teachers, class II students at SD Negeri 091320 Raya Tongah, totaling 25 people, namely 12 students, 12 parents and 1 teacher in class II. Data collection techniques in this research use documentation, interviews, observations, namely looking for data on relevant things from various kinds in the library such as documents, books, magazines, news. The results of the analysis of research data obtained show that the impact experienced by students, teachers and parents in online teaching and learning activities is that students' math scores increase, the impact felt by parents and teachers on technology mastery is still lacking, additional internet quota costs, employment In addition, for parents to assist children in learning, communication and socialization between students, teachers and parents are reduced.