Go to Normal view by (1) clicking on Close Master View on the Slide Master View to return to Normal View (see below)
or (2) click on the menu bar View|Normal.or (3) click on the icon in the bottom left corner of your screen . Content slide 1 will display all six (6) elements from the master content slide. You are only supposed to be able to select and edit these elements in the Slide Master View. However, the elements have been copied form content slide 1, so they are still on slide 1. When you start to delete the six (6) elements from your content slide, start by deleting the larger background image first, as it might obscure images below it.