Teaching Activities in Schools is an MBKM program that aims to improve students' teaching skills in the classroom so that they are able to provide innovative learning and produce a sustainable project for placement schools. The Geography Education Study Program sent four students to SMA Negeri 1 Marisa. The output of this activity is to produce a “simple natural laboratory at school”. The nature laboratory has erosion observation plots, anemometers and rainfall gauges. The participants of this activity were Rahmiyati A. Mohammad, Merlin Dalanggo, Laras Lamunte and Magfira Abdulrahman. The teaching campus MBKM program is guided by a field supervisor, namely Mrs. Rusiyah S.Pd., M.Sc.