I could import lessons from another teacher's planbook to my planbook

My teammate and I divide up lesson planning (I plan 3 subjects, she plans 3 subjects) and share them with each other very week. Right now, I have to go to her planbook, copy one lesson, go back to my planbook, and paste that lesson. It would be great if I could go to her planbook and click some sort of "quick import" button that could send the lesson directly to my planbook, rather than having to hop back and forth between two planbooks.

Another idea: It would be awesome if I could copy and paste a range of lessons rather than just one at a time.