Providing attribution is essential when using OER. All CC licenses require that attribution be given to the creator. Use the "TASL approach" when sharing your on work as well as giving attribution others:
T= Title
A = Author (tell reusers who to give credit to)
S = Source (give reusers a link to the resource)
L = License (link to the CC licence deed)
Visit the wiki page on Best Practices for Attribution for additional information and examples.