Use of the granny gear for initial teaching would be a mistake. You can let the clutch out easily but a person would not learn anything about the feel of the clutch. They are very handy to have, especially in stop and go lineups on an incline.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!