Language teaching through arts

How do you give a meaningful assignment for an open creative process In a classroom with multilingual children and allow children to experiment outside the box? Do you dare to see classroom work as research? Do you dare not know and leave the knowledge to the children? How do you help multilingual children give feedback on the creative process if it is difficult for them to express themselves verbally in the school language? And if the language was the ultimate tool for realising a project? ‘Language diving and articulearn’, what do you understand by this neologism?