The video is generally about what is situated learning theory, how it is occurred, what is the Community of Practice and its structural elements. In the video, it is explained that Lave and Wenger observed different populations that learning takes place in social situations with other people thus the situated learning theory was born.
In the video, students are learning and getting expertise concepts by engaging different activities. Through activities students make some research about the topic and teachers help them to get deeper knowledge about topic by asking questions.
In the activities, the source of knowledge not only teachers but also students themselves. I mean, students also learn from each other. Moreover, teachers' role is guiding and helping students when they stuck on something.