"These OWL resources contain lesson plans and activities to help teachers instruct students on how to understand and avoid plagiarism. Activities in the "Contextualizing Plagiarism" section ask students to discuss and write about plagiarism, copyright, collaboration, authorship, and plagiarism policies. Activities in the "Avoiding Plagiarism" section ask students to differentiate among summarizing, paraphrasing, and quoting and use MLA and APA in-text citations appropriately. The resources with titles that include "Handout" provide handouts that are free to print for your students by using the print option in your web browser. The "Handout" resources correspond with the resource listed above it." - OWL Purdue
"Suspecting a student of plagiarism is never pleasant; proving a student has plagiarized is even worse. It's common for teachers to feel offended and hurt when students act unethically in their courses. But there are some things you, as a teacher, can do to minimize plagiarism in your classes." - OWL Purdue
Using Other People's Ideas (video)
Describes 4 ways to use someone else's ideas: Summary, Paraphrase, Quotation, and Plagiarism.