6.2.1.1
Understand that a variable can be used to represent a quantity that can change, often in relationship to another changing quantity. Use variables in various contexts.
Example Problems
Write an expression for:
"Twice y"
"Twice y"
Write an expression for:
3 times z
3 times z
Write an expression for:
5 less than y
5 less than y
Khan Academy ResourcesEvaluating expressions with one variableWriting basic expressions with variablesWriting expressions with variablesIntro to equationsExpression value intuitionTerms, factors, and coefficients reviewWriting basic expressions word problemsWriting expressions with variablesEvaluating expressions with one variableAnalyze relationships between variablesModel with one-step equationsRelationships between quantities in equationsWriting basic expressions with variablesExpression value intuitionEvaluating expressions with variables word problemsWriting basic expressions word problemsSolve equations from visual modelsIdentify equations from visual models (tape diagrams)Model with one-step equations and solveTranslate one-step equations and solveIndependent versus dependent variablesIdentify equations from visual models (hanger diagrams)What is a variable?Why aren't we using the multiplication sign?Evaluating an expression with one variableEvaluating expressions with variables: temperatureVariables, expressions, & equationsRepresenting a relationship with an equationOne-step equations intuitionDependent & independent variables: graphingWriting basic expressions word problemsAnalyzing relationships between variablesWriting basic expressions with variablesWriting expressions with variables & parenthesesWriting expressions with parenthesesWriting algebraic subtraction expressionsWriting expressions with variablesModeling with one-step equationsExpression value intuition

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