During the third year of life, toddlers rapidly develop hand and finger skills. Drawing is a major accomplishment during this period, and two-year-olds will grasp pencils in a slightly awkward writing position to create their first drawings.
Shelov, S. P. (Editor-in-Chief). (2004.) Caring for Your Baby and Young Child: Birth to Age 5. The American Association of Pediatrics. Revised edition. New York: Bantam Books.