As kindergarteners master letter tracing, the next step is learning to print letters on lines. Printing letters helps in learning letter formation. It is the first step toward learning to write letters. Pre-writing skills are needed before trying any letter formation or other handwriting. These writing worksheets will help the child to master the writing strokes of a letter and improve their fine motor skills. An upper case letter uses three lines. The line at the top is the ‘’headline”, in the middle is "midline” and the bottom is called the "baseline”. Download Letter U writing worksheet. Encourage kindergarten students to write the letter U with the proper formation on a line.