Still trying to get used to the numbers 2 through 9 standing somewhat arbitrarily for note values, and found the process confused by casting my glance towards the note palette to the left of the work space: the larger note value in the palette is to the left in each pair, whereas, of course, in the number row, the values get larger as they move to the right.
I might suggest a reordering of the palette starting with the smallest values at the top:
Thus the 8 most basic ones would appear as follows:
64th  32nd 
16th  8th 
Quarter  Half 
Whole  Breve