This research explains the implementation ofblended learning during the covid-19 pandemic on the third grade of SD Negeri 3 Tambaksogra. It was conducted during the pandemic, so the learning system used was blended learning which combined online learning and face to face learning. This qualitative research aimed to find out the lesson plan of blended learning, to describe the implemetation of blended learning, and to find out the obstacles. The participants of this research included the school principal, the third grade teachers, 3 parents, and 3 third grade students. The data ware collected using observation, interviews, and documentation. The results showed that the implementation of blended learning had been carried out by the school starting from the lesson plan arranged by the teacher which included learning media and video. It was alternative learning during the pandemic which had been well implemented in the schooll. However, there were still obstacles during the implementation of blended learning. The students tended to be less active during the learning, some of them felt hard to understand the material, and sometimes they were not punctual. Moreover, the unstable internet connection and the ownership of personal mobile phones also become the obstacles of blended learning implementation