There are two big things that need to be done in order to copy and paste into a Google Doc. One is creating the Google Doc. The other is opening the Pages document and doing the copy and paste.
The first step in copying and pasting to a Google Doc is creating creating a Google Doc. Watch the video to the right or follow the steps below to create one.
Go to Google Drive
Click the New Button
Choose Google Doc
Click at the top left where it says "Untitled Document" to name it
A Google Doc has now been created in whichever folder you were in
The final step is actually copying and pasting from Pages to the Google Doc. Watch the video or read the steps below
Open your Pages document next to the Google Doc.
Highlight the text by clicking down and dragging over the text
Go to the Edit menu and choose copy (Command+C works as well)
Click in the Google Doc, go to Edit and choose Paste (Command+V)
The text should then appear in the Google Doc and is saved automatically