The study was designed to explore how to proceed an Subject-Inquiry-Based Learning and enhance their knowledge about weather through joining the Inquiry Web-Based Learning competition held by the Department of Education of Taipei City Government. The purpose was to find out how they completed the assigned tasks and what they learned from the process of this Web-Based Learning competition. The subjects were 30 gifted students in one junior high school. The results show that most of the gifted students completed the tasks by using the database in Central Weather Bureau and Taipei Weather Inquiry-Based Learning Network (TWIN). After the Web-Based Learning competition, they learned how to reflect better from their peers' reflection and gained additional knowledge about and emotional support from their peers' comments. There are some effects such as their attempt to apply the knowledge into practice, change of their beliefs and the gain of additional perspectives.