major scale segments

Here's how I divide up the major scale for purposes of fingering:

7-1-2
1-2-3
2-3-4
3-4-5
4-5-6
5-6
6-7-1

It's a pleasing coincidence that there are seven segments, just like there are seven pitches in the scale.

Finger independence helps with sight reading

Working on the finger independence trills has dramatically helped my technique and I've noticed that this has helped my sight reading. When your fingers are equally strong, then you don't have to be as picky about what finger you use to play what; this helps to make sight reading speedy because you don't have to pause every few bars to work out the fingering.