"Tools for teaching critical online reading" is a material package that includes a booklet. The booklet covers the following topics: 1) What is critical reading? 2) How well can adolescent readers evaluate the credibility of online texts? and 3) How critical online reading can be taught? The content is also compiled in separate videos. The material package also includes learning materials that can be used to practice the evaluation of the credibility of online texts with adolescent readers. The learning materials are in the collection "Tools for teaching critical online reading." https://aoe.fi/#/kokoelma/338.