Tonic Triad Drill with Numbers Theory Things   William Wieland
Each number followed by a comma is sung as a quarter note, all others are eighth notes. This exercise can be sung as a canon.
3
1 1  1 1.
5 5  5 55,    
 3  3 33,    
11,    
33,    
 1  1 11,    
5 5  5 55,    
3 3  3 
11.