Transitions are animations that you can use when advancing from one slide to the next during a presentation. They can be fun, but be careful not to overdo it with complicated transitions because they can become distracting.
Select the slide that you want to apply a transition to.
To select multiple slides, hold down Ctrl as you select each slide.
Click the Transitions tab.
Click the Slide Transitions More button.
Select the transition you want to use.
The transition is applied to just the selected slide. To apply the transition to all slides in the presentation, click the Apply to All button on the Transitions tab.
(Optional) To test the transition after it’s applied, click the Preview button.
To remove a transition, select None in the Slide Transitions gallery.