Teaching critical thinking can be difficult, and it is nice to know that Professors Joe Lau and Jonathan Chan at the University of Hong Kong have created this site to help both teachers and students in this endeavor. Working with a grant from the government of Hong Kong's University Grants Committee, the two have created this website to provide access to over 100 free online tutorials on critical thinking, logic, scientific reasoning, and creativity. The homepage includes a brief introduction to critical thinking and access to the main modules, which are divided into thematic areas such as values and morality, strategic thinking, and basic logic. Visitors can also view the Chinese version of this site, download class exercises, and even take on "the hardest logic puzzle in the world."