A lot of students don't think that examples like these count as plagiarism. But they're wrong.
This is a sample video from a video tutorial course titled "How to Cite Sources and Avoid Plagiarism".
Part 1: What is Plagiarism?
1.1 Plagiarism: the Basic Definition
1.2 Downloading or Buying Whole Papers
1.3 Cutting and Pasting from Several Sources
1.4 Changing Some Words but Copying Whole Phrases
1.5 Paraphrasing Without Attribution
1.6 The Debate Over "Patchwriting"
Part 2: How to Cite Sources
2.1 When Should I Cite a Source?
2.2 What Needs to be Cited?
2.3 How to Cite: Mark the Boundaries
2.4 Citing Exact Words
2.5 Citing a Longer Quotation
2.6 Citing a Source But Not Quoting
2.7 A Comment About "Common Knowledge"
2.8 Citation Styles: MLA, APA, CSE, Chicago, Turabian, oh my!