Use the toolbar at the top of the module to navigate through this section of the module.
The large arrows at the far edge of either side of the toolbar will direct you forward or backward through the slides.
The large arrow on the left takes you back a slide; the large arrow on the right takes you forward a slide.
The dots in the center will take you to a specific slide.
The smaller double arrows and play/pause buttons in the center of the screen allow you to rewind, play/pause, and fast forward through the content on the slide.