Scribes in the Neo-Babylonian period had to know how to read and write the Sumerian language, even though it was no longer spoken at that time. To help them to remember, scribes produced tablets such as this one. This tablet contains a list of cuneiform signs, each with its Sumerian pronunciation and Akkadian translation.
An Early Clay Tablet
See how this early clay tablet used pictures to communicate.
Claiborne, Robert. The Birth of Writing. The Emergence of Man series. Alexandria, VA: Time-Life Books, 1974.
Kramer, Samuel Noah. The Sumerians: Their History, Culture, and Character. Chicago: University of Chicago Press, 1963.
Walker, C.B.F. Cuneiform: Reading the Past. Berkeley: University of California Press, 1987.