Hello there!

I've been enjoying LIsa's Guitar Fundamentals course and am working on my first scales.

There's something I'm not quite understanding. Now as I understand it a scale begins on a root note (c for example) and ends on it.

Why ,then, in grid patterns do the scales start and end a few notes before the root note? For example when I go into the scale finder on the Guitar Tricks Tools the C major scale (pattern 4) begins on an E and ends on a G.

Or am I not seeing things correctly?

Anyway, I hope my question is clear, Thanks