Missing tool in the Toolbar (Shading/UVs) I'm trying to duplicate a tutorial about particles (making sprinkles).

However, there is a step wherein I have to invert the hair particle, using a button under the "Shading/UVs" tools.

This toolbar does not display in my Blender (I'm using 2.79b) so I'm stuck and I cannot seem to activate it either.
The "Shading/UV" panel of the Tools shelf is available in Edit Mode  only. 

Try hitting Tab to switch to Edit Mode.