To change font size : Font « Editing Format « Microsoft Office PowerPoint 2007 Tutorial

1. Microsoft Office PowerPoint 2007 Tutorial
2. Editing Format
3. Font

Select the characters.
       In the Home tab Font group, choose a font size option:
       Increase font size.
       Decrease font size.
       Font size menu.

2.1.Font
	2.1.1.	To change the font
	2.1.2.	To change font size
	2.1.3.	To bold, italicize, or underline text:
	2.1.4.	To change text and text background color
	2.1.5.	Add a superscript or subscript.
	2.1.6.	Add a shadow