Even though "O" is for ostrich, your kid won't stick their head in the sand while learning this fifteenth letter of the alphabet. These kindergarten letter O worksheets will pull your kid into an fun-filled "O" adventure where she will find hidden Os, learn about animals and other objects that begin with the Letter O, and more "O" learning than you can shake a stick at. When they're ready to move on, try our kindergarten letter P worksheets.