Sort the cards into four groups: less than 1/2, equal to 1/2, greater than 1/2, and greater than 1 whole.
Compare to 1/2 pt 1
1/3
1/5
1/12
2/3
2/4
2/10
3/5
3/6
< 1/2 (less than 1/2)
=1/2 (equal to 1/2)
>1/2 (greater than 1/2 - but less than 1)
>1 (greater than 1 whole)
Compare to 1/2 pt 2
3/8
3/12
4/2
4/5
4/8
4/12
5/6
5/8
Compare to 1/2 pt 3
5/10
5/12
6/3
6/12
7/10
8/4
9/10
11/12