This lesson introduces the concept of a vector, a concept we will use throughout the course to visualize and study calculus in dimensions two and above. Pictorially, vectors are just arrows. But it’s the mathematical structure that we’ll associate with vectors that will imbue them with useful meaning and importance.
In Module 1 we’ll introduce the foundational concepts and terminology associated with vectors, and we’ll learn how to visualize vectors in 2D and 3D.
In Module 2 we’ll learn about the algebra and properties of vectors (e.g., how to add two vectors together).
Finally, in Module 3 we’ll learn one way to “multiply” vectors together—the dot product—and discuss what information and insights this method provides.
Work through the lesson notes below, consulting the videos below it when you get to the "See Class Notes" boxes. For your records, the annotated lesson notes are below the videos. Some tips for you as you work through these resources:
I recommend using Cornell Notes (or a modification of it; see this video starting at the 1:05 mark) to take notes on the lesson and the videos. This note-taking method balances detail with big-picture thinking to help you summarize and retain what you are learning. See this other video for additional note-taking techniques you might want to experiment with.
If you are currently enrolled in this course with me, submit the written reflections Google Form I have emailed you after working through the lesson notes and videos. Some tips:
Submit substantive, but concise, answers to each question; you will be doing the future you a big favor by taking time now to accurately and succinctly summarize what you have learned from the lesson.
Send yourself a copy of your reflections; they will come in handy later when you start preparing for quizzes and other assessments.
If you are not currently enrolled in this course with me, those written reflections ask three reflective questions designed to help you retain what you've learned and pinpoint any remaining areas of confusion. Those questions are:
Please summarize the main mathematical takeaways from the lesson notes.
What was the most interesting part of what you learned, and why?
What, if anything, do you still find confusing?
Work through the practice problems suggested below to see how much of this lesson you've understood.