Libreoffice not letting start a new slide

Libreoffice impress, english, mac

My daughter is trying to develop a slide show for a class project. She had no problem with the first slide, but when adding a new slide, it will not let her add any information, pictures or type to the slide. It stays blank and we can not figure out how to continue making a slide show beyond the opening slide

Are you sure she has clicked in the middle part? When she has used the left slide pane to insert a new slide, then still this slide pane is active, and there you cannot draw.

I recommend to have a look at the free guidelines available here: http://www.libreoffice.org/get-help/documentation/