The project is about the Goals of Sustainable Development (GSDs) 2030. As they are a very important challenge to achieve by 2030, pupils should learn them in a motivating way. That’s how this project-based learning was created. Pupils will search for information about “The world’s largest lesson” and the aims of it. After that Pupils will share their conclusions and their learnings about this first part of the project work. Each team will choose a goal to work on. Pupils should start sharing their brainstorm results about the goal they choose. They must find out information about the goal, write a clear and simple paragraph about it. The team should also have a new illustration for the goal that the partner schools will use the new posters to call the attention of the school community about this issue. After, they should do a common presentation with their own illustration and the audio file of the text they wrote about it. There will be a second round (depending on the number of partners) and they have to choose another goal and do exactly the same activities. Finally, the team will have all the goals illustrated and an audio explanation about it. Teams must listen to the files and disseminate them at school but using QR codes on the walls. After they know about the goal they agree on a video-conference meeting to debate it with their peers. Teams should at least participate in an online meeting. To conclude the project, pupils share their opinion about the project and do an online evaluation.