BEFORE TAKEOFF
C - controls
I - instruments
G - gas
A - attitude (trim)
R - runup
BEFORE LANDING
G - gas
U - undercarriage (gear)
M - mixture
P - prop
What about heat :o........carb heat is the silent killer

I was always taught to read through every checklist...........however on downwind you should go through a memorized pre-landing checklist, and to make easier to remember, you work from left to right across the panel.......the same as you would in an engine failure

So in a cessna...... primer is locked, master is on, mags on both etc. etc. etc. accross the panel and then down to fuel management. Get it all out of the way on downwind, then you can just worry about flying the plane on base and final 8-)