Center for Innovation in Mathematics Teaching
Vectors
Investigate vectors and learn how to use them. Explore why size and direction, as well as knowing speed and distance, are important components of the vector problems you are trying to solve. This is an extensive lesson which includes six...
Wolfram Research
Wolfram Math World: Dot Product
This math site gives the formula for taking the dot product of two vectors, gives properties of dot products, (commutative, associative, and distributive), how to find the derivative of a dot product. This site has links to several other...
University of Nebraska
University of Nebraska: Unit Vectors
In this resource unit vectors are defined and examples are given here. Notation is discussed also.
Wolfram Research
Wolfram Math World: Unit Vector
This page defines the unit vector, a vector of length one in the same direction as a given vector. (The term "norm" can be interpreted in many cases as "length.") Provides formulas, references, and links.
Wolfram Research
Wolfram Math World: Vector
This site from Mathworld.com provides a detailed overview of vectors in algebra, and includes numerous formulas and examples.
Wikimedia
Wikipedia: Centripetal Force
Wikipedia's site on centripetal force provides a section explaining the difference between centripetal force and centrifugal force. Includes formulas and hyperlinked terms.
Khan Academy
Khan Academy: Unit Vectors
Find a unit vector in the direction of a given vector. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Unit Vectors and Components
[Free Registration/Login may be required to access all resource tools.] Here you'll learn how to break down a vector into component vectors and unit vectors.
Khan Academy
Khan Academy: Vector Magnitude & Normalization
Understanding how to calculate the length (also known as magnitude) of a vector. Normalizing a vector is also examined.
National Council of Teachers of Mathematics
The Math Forum: Unit Vectors
Definition of a unit vector with an illustration.
National Council of Teachers of Mathematics
The Math Forum: Unit Vectors From Others
Description of how to derive the unit vector from a particular vector.
National Council of Teachers of Mathematics
The Math Forum: Unit Vectors and Unit Circle
Description of the unit vector and its relationship to the unit circle.