摘要：These objectives the study were to 1) design of problem-based with scaffolding learning activities in ubiquitous learning environment to develop problem-solving skills, The design used a problem-based learning process and scaffolding strategy in learning activities. Students can learn everywhere and every time by using mobile devices as a tool for learning, and 2) evaluate the Problem-based with scaffolding learning activities in ubiquitous learning environment to develop problem-solving skills. The research procedures were divided into two phases. The first phase was to design of problem-based with scaffolding learning activities, and the second phase was to evaluate a learning activities. The sample group in this study consisted of 5 experts using purposive sampling. Data were analyzed by arithmetic mean and standard deviation. The research findings were as follows: 1)The learning activities consisted of four components as followed: 1)study of the content, 2)present the problem, 3)problem solving planning 4)problem solving and 5)identify generalization and principles derived from studying the problem. The objective of the learning activities is to develop problem-solving skills. 2)The experts agree that a learning activities was appropriateness in a good level.
