This month, we discuss Jean Lave & Etienne Wenger’s Situated Learning: Legitimate Peripheral Participation, published in 1991. This short but powerful book presents a new way of thinking about adult learning as a social activity in which experienced members of a group or community of practice share their knowledge with new members to perpetuate the group identity. They present five case studies – one by Lave herself with four from other researchers – to help broaden the perspective of how situated learning works social involvement in which newer members are initiated through the exercise of low-risk or controlled tasks.