Near the bottum of the page is a bold link "Ukulele exercises". Right-click and "save target as" to download the PDF to disk. There's seven pages of assorted common progressions, and each is then show in 7 different keys, mapped-out on Uke in chord/dot grids -- most are open position chords (first three or four frets).
excellent resourse!
Roger
http://www.TheCipher.com "Blumberg's Music Theory Cipher for Guitar and other Stringed Instruments" [Free online tutorials for Guitar, Bass, Mandolin, Banjo, Ukulele, and more]