"Plagiarism" means copying and not giving credit to the person that wrote the words first.
Plagiarism is a kind of cheating. In college, students who plagiarize get kicked out of college. At work, people who plagiarize lose their jobs.
That's why it's so important to get in the good habits of:
Gather information by taking notes. (only the treasure words, NOT complete sentences)
Make a list of the sources I used for notes and pictures.
Write a script and create a video.
It is very important to give credit to the sources of information. Those authors worked hard to do their research and writing. They don't want someone to copy their work!
I have a paper called My Sources. I will fill in the blanks for the sources I used.
When I turn this in, I am giving credit to the authors for their hard work. And I am being honest about where I found my information.