This research proposal suggests introducing open data into classrooms to engage students and teach critical thinking skills. The CLODa project would develop lesson plans using current, relevant open data on topics like flooding maps, FIFA corruption, and open library content. It would be tested in several countries. The goals are to improve interest in core subjects, teach data literacy and computing skills, and create social value by solving real-world problems. If funded, the project would have 5 work packages, cost over 1 million Euros, and involve creating lessons, piloting them, gathering feedback, and planning further iterations.