I went to a workshop on Literacy Work Stations today.  I couldn't wait to get home and make this font letter sort for the letters a, m, b, and f.  I think it will be helpful for children to see the different ways that lower case a appears in different print.  This printable can be found on the ABC Center page or the Printables page.  I plan to print it on regular paper and have students cut out the squares, sort the letters, and glue them on the appropriate columns.  This could also be printed on cardstock and laminated for repeated use.