1, first we create a new slide, click the New button, and then in the new slide, enter any text, I type "bounce word"
2, then select these words, and then click on the menu bar above the "animation" option
3, in the animation panel, click "Custom Animation", open the Custom Animation dialog box
4, in the custom panel, we click the "Add Effect" button, in the Drop-down menu, click "Enter", pop-up menu, we select "Other effects" in the subordinate menu
5, opened a "Add Entry effect" dialog box, we find "random effect", select him, and then click OK
6, the last click on the Preview button, more than a few previews you will find that the text into the effect is changeable, each preview has a different effect.