strategies for multiple choice 86 videos

Vector Operations in 3D
Precalculus Vectors and Parametric Equations
How to perform vector operations like addition, scalar multiplication, the dot product, and finding the magnitude, in three dimensions.
vectors components vector addition scalar multiplication the dot product the scalar product magnitude length three dimensions 

Solving Equations with fractions and decimals by "Clearing"
PreAlgebra Solving Equations and Inequalities
Solving equations with fractions by multiplying by the least common multiple

Commutative, Associative
PreAlgebra Properties of Numbers
Overview of the commutative and associative properties for addition and multiplication

Distributive
PreAlgebra Properties of Numbers
Introduction to the distributive property of multiplication over addition or subtraction

Square Matrices
Precalculus Systems of Linear Equations and Matrices
How to determine whether two matrices can be multiplied, and if so, what the dimensions of the product will be.
matrices rows columns dimension matrix multiplication 
The Identity Matrix
Precalculus Systems of Linear Equations and Matrices
How to determine the identity matrix of order n.
matrices square matrices the identity matrix matrix multiplication 
Matrix Operations
Algebra 2 Matrices
How to use simple matrix operations.
adding matrices scalar multiple matrix matrices 
Augmented Matrices
Algebra 2 Matrices
How to use matrices to solve a system of linear equations.
augmented matrix row operations scalar multiple 
The Big End
AP US History AP US History Review
Review the key tools and strategies and identify important events and terms for the AP exam.
How to review AP U.S. History