Wolfram Research
Wolfram Math World: Radius Vector
Mathworld.com provides a very brief definition of the radius, or position vector. Also gives some properties of the derivative of this vector.
National Council of Teachers of Mathematics
The Math Forum: Vector Addition: Algebra
Illustration and description of how to add vectors using algebra.
Other
Can We Multiply 3 Vectors Together?
Addresses four possible cases of multiplying three vectors together and explains whether it is possible or not.
National Council of Teachers of Mathematics
The Math Forum: Vector Length
Describes how to use the Pythagorean Theorem to find the length, or magnitude, of a vector.
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.
Other
Personal Site: Adding Vectors
This personal site provides a diagram and description of the addition of vectors. The triangle law of addition and the parallelogram law are given.
![Houghton Mifflin: Math Graphs: Sketching Vectors 8 [Pdf] Unknown Type](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Houghton Mifflin: Math Graphs: Sketching Vectors 8 [Pdf] Unknown Type")
Math Graphs
Houghton Mifflin: Math Graphs: Sketching Vectors 8 [Pdf]
Students use a figure to sketch a new vector that combines the tail of one vector with the head of the other vector. The practice problem is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Sketching Vectors 9 [Pdf]
The practice exercise asks students to sketch a new vector that combines two given vectors. The problem is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Sketching Vectors 10 [Pdf]
The practice exercise asks students to sketch a new vector that combines two given vectors. The problem is available in PDF format.
Math Graphs
Houghton Mifflin: Math Graphs: Sketching Vectors 12 [Pdf]
Learners sketch a graph of the specified vector by combining two given vectors. The practice problem is available in PDF format.
Ducksters
Ducksters: Physics for Kids: Scalars and Vectors
Kids learn about scalars and vectors in the science of physics. Scalars are magnitude only while vectors have magnitude and direction. Examples and differences and how to draw a vector.
Educaplus (Jesús Peñas Cano)
Educaplus: Suma De Vectores: Regla Del Paralelogramo
Visualize the sum of two vectors with this interactive activity.
Educaplus (Jesús Peñas Cano)
Educaplus: Resta De Vectores
Visualize the difference of two vectors with this interactive activity.
Wolfram Research
Wolfram Math World: Math World: Vector Addition
Defines vector addition and gives the algebraic notation for adding vectors. Includes a graphic and links to additional information.
National Council of Teachers of Mathematics
The Math Forum: Vectors
This site from the Math Forum of Drexel University contains downloadable sketches and pictures related to vectors. You may need to down-load the Geometer's Sketchpad to view these pages.
Wolfram Research
Wolfram Math World: Scalar Multiplication
Describes how a scalar can be multiplied to a vector and shows this using diagrams. Site also contains related links, graphs, and pictures.
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.
National Council of Teachers of Mathematics
The Math Forum: Vector Addition: Geometry
Illustrates and describes how to add two vectors graphically.
National Council of Teachers of Mathematics
The Math Forum: Dot Products of Non Unit Vectors
Description of finding the formula for the dot product of any two vectors.
Walter Fendt
Walter Fendt: Resultant of Forces (Addition of Vectors)
A short interactive activity which allows you to visualize the sum of vectors.
Educaplus (Jesús Peñas Cano)
Educaplus: Suma Grafica De Vectores
Visualize the sum of different vectors with this interactive activity. You may choose from two to seven vectors.
Wolfram Research
Wolfram Math World: Direction Cosine
This page discusses the direction cosine, which can be used to find the coordinates of a unit vector in the direction of any given vector. Includes some rather advanced formulas.
Wolfram Research
Wolfram Math World: Perpendicular Vectors
Come to this site to find the transformational matrix to find the vector rotated 90 degrees from the original. The site also states the special relationship between two perpendicular vectors when using the dot product.