We have developed the know-how information sharing system. As the method to extract the know-how information, we consider that visualizing and showing care plans drawn up by experts in various forms allows a beginner to see the differences between a novice plan and an expert plan. This system can visualize the similarities among documents that experts interpreted the results of an assessment and can flexibly change viewpoints. Additionally, it can map a user's and several beginners' new document into a two-dimensional document space. Through the result of the evaluation used by a nurse, care workers and care takers, we confirmed that this system was effective in educational supports.