The surrounding environment has many facts and phenomena that teachers can use as a learning resource for students. The characteristics of land and process physics the inclusion of rainwater into the surface of the soil can be excavating physical concepts to become learning materials. This research aims to measure, analyze and describe the process of physics, infiltration and erosion surfaces and design and implement learning activities outside the classroom. This research uses methods of descriptive analysis. The outdoor research shows that the fastest infiltration process is on grass fields and the largest erosion potential on the open land. The results of the infiltration and erosion measurement of the surface are connected with the concept of science based on the fact phenomenon, implemented to the students with a form of assessment of the process ability and learning group achievement of students seen in the average results, as for the level of diversity of score variation between facts and the overall phenomenon seen from the value of variances. The results of this study became a teaching material as a supporter of science learning design that utilizes the environment in the form of thematic learning.