Let's learn Letter A. Letter A Coloring Worksheets to associate Letter A with everyday objects starting with Letter A. An early fun-filled reading, writing, and activity worksheet to help preschoolers learn the letter A formation and recognize uppercase and lowercase letters. Letter recognition is a vital preschool activity and allows children with several activities. Coloring is an excellent medium to improve a child's concentration and enhance fine motor skills. Coloring also improves visual development skills and helps children express themselves in beautiful ways.