Switch between workspaces
Using the mouse:
Open the Activities overview.
Click on the workspace partially displayed on the right-hand side of the current workspace to view the open windows on the next workspace. If the currently selected workspace is not the leftmost, click the workspace partially displayed on the left-hand side to view the previous workspace.
If more than one workspace is being used, then you can also click on the workspace selector between the search field and the window list to directly access another workspace.
Click on the workspace to activate the workspace.
Using the keyboard:
Press Super+Page Up or Ctrl+Alt+Up to move to the workspace shown left of the current workspace in the workspace selector.
Press Super+Page Down or Ctrl+Alt+Down to move to the workspace shown right of the current workspace in the workspace selector.