ERIC/EECE Archive of Publications and Resources


ERIC Digests were short introductions to or overviews of a topic. Most Digests contain a reference list for further reading. Digests were intended to be timely presentations of information on a topic. Therefore, please note that some Digests that are more than 3 years old are maintained on this Web site for archival purposes, and the information may no longer be up-to-date. Digests are no longer available in print.