This course presents an introductory roadmap into the newly emerged and rapidly evolving field of data science, with the objective of introducing the problem-solving mindset in a data-intensive context. The course projects data science as a productive synthesis of its parent disciplines, including mathematics, statistics, computing, data mining, systems science and data visualization, etc. Such a productive synthesis is applicable across may fields to bring about scientific discovery through data-intensive analytical methods. This course aims to help secondary school students acquire knowledge in disciplines related to data science and get experience in solving problems with advanced techniques.