Khan Academy
Khan Academy: Variables and Expressions: Example: Evaluating an Expression
This video demonstrates how to solve a word problem using an expression and substituting values for a variable.
Khan Academy
Khan Academy: Examples of Evaluating Variable Expressions
Video shows how to simplify expressions showing multiplication and how to write products with variables without multiplication signs.
Virtual Nerd
Virtual Nerd: Interpret the Structure of Expressions
This site teaches students how to interpret expressions that represent a quantity in terms of its context, interpret parts of an expression, such as terms, factors, and coefficients, and use the structure of an expression to identify...
Sophia Learning
Sophia: Adding and Subtracting Rational Expressions in the Real World
Just like other kinds of expressions or functions, rational expressions can represent real world situations. In this tutorial, you will learn how to use rational expressions to represent naturally occurring scenarios involving addition...
Sophia Learning
Sophia: Adding and Subtracting Rational Expressions in the Real World
Just like other kinds of expressions or functions, rational expressions can represent real world situations. In this tutorial, you will learn how to use rational expressions to represent naturally occurring scenarios involving addition...