Acting as an expert in educational technology, recommend online tools that facilitate group work and collaboration for [insert grade level] students. The tools should allow for real-time collaboration, project management, and communication. Provide a list of tools, such as Google Docs, Padlet, or Microsoft Teams, and explain how each tool can be integrated into the classroom to enhance student collaboration. Include both free and premium options, focusing on ease of use and accessibility. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>