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Khan Academy
Khan Academy: Evaluating Expressions With Unknown Variables
In this video lesson students work through a few examples where we need to evaluate an expression.
Sophia Learning
Sophia: Terms in Algebraic Expressions
This lesson defines the concept of terms in an algebraic expression. Students can watch a video tutorial and then take an online quiz.
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.
Sophia Learning
Sophia: Using Real World Examples to Evaluate Expressions
Students watch a video lesson that demonstrates how to write and evaluate expressions using real-world information. The tutorial includes detailed examples of the skill.