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Variables and Expressions
I. Basic Concepts: Lecture 1 | 24:05 min
In this first Algebra lecture on Educator.com, Dr. Fraser will briefly cover the history and origin of algebra, The word 'algebra' and why it is so powerful compared to arithmetic in solving real world problems till date. You will then cover basic definitions such as variable, algebraic expression, and operations. The lecture concludes with four examples where you will convert an algebraic expression from a sentence.
QuickNotes™ 
Variables and Expressions
A variable is used to represent an unknown number or value.
An algebraic expression combines numbers and variables with arithmetic operations.
Review these terms: product, factor, power, base, exponent
Practice translating verbal expressions into algebraic expressions. This is an essential skill you will need to solve word problems throughout this course.
Evaluating an expression means to find the value of the expression.
Discussion 
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Carleen Eaton
Grant Fraser

