Switch between workspaces
Using the mouse:
Open the Activities overview.
Click on a workspace in the workspace selector on the right side of the screen to view the open windows on that workspace.
Click on any window thumbnail to activate the workspace.
Using the keyboard:
Press Super+Page Up or Ctrl+Alt+Up to move to the workspace shown above the current workspace in the workspace selector.
Press Super+Page Down or Ctrl+Alt+Down to move to the workspace shown below the current workspace in the workspace selector.