## 6.EE.C.9 Use variables to relate two quantities in a real world problem

Posted: January 26, 2015 in Advance

Use variables to represent two quantities in a real-world problem that change in relationship to one another; write an equation to express one quantity, thought of as the dependent variable, in terms of the other quantity, thought of as the independent variable. Analyze the relationship between the dependent and independent variables using graphs and tables, and relate these to the equation.

#### Lesson Videos:

Identify independent and dependent variables

In this lesson you will learn how to identify independent and dependent variables by examining.

Relate independent and dependent variables using a function table

In this lesson you will learn how to show the relationship between independent and dependent variables by analyzing a function table.

Show the relationship between variables using a graph

Relate variables using a graph.

Relate variables using an equation

In this lesson you will learn how to show the relationship between independent and dependent variables by writing an equation.

Identify variables and their relationship in a real-world situation

In this lesson you will learn to identify the variables and their relationship given a real-world scenario.

Identify variables and their relationship in a table

In this lesson you will learn to identify the variables and their relationship given a table.

Identify variables and their relationship in a graph

In this lesson you will learn to identify the variables and their relationship given a graph.

Convert real world situations into equations using models

In this lesson you will learn to convert real world situations into equations by using models.

Write equation of a graph using a table

In this lesson you will learn to convert a graph into an equation by using a table.

Create equivalent algebraic representations (table, graph, equation, …

In this lesson you will learn to create equivalent representations by identifying variables and their relationship to one another.

#### Isolation Drills:

Dependent and independent variables

#### Interactive Practice:

1. Algebra I Recipe: Solving an Equation with Variables on Both Sides (Multi-Step Equations) – Explanation and examples
2. Balancing Equations – Spy Guys Interactive Lesson 11
3. Equation Match – Find the value of X in each equation
4. Interactive Algebra Tiles – Use this to model an equation or to solve an equation
5. Late Delivery – Find the value of expression written on each door to deliver the mail
6. Learning ratios and proportions through scale drawings – A text lesson plan
7. Math Word Problems – Eight question multiple choice quiz [Variation or Inverse Proportion]
8. Practice problems in solving an equation with variables on both sides – Ten practice problems, answers are checked
9. Solving an Equation – Practice at manipulating expressions and finding the value of variables
10. Solving Problems Involving Direct Proportion – Some good practice problems are presented here, UK units used [close the subscription screen to get to the problems]
11. Solving Proportion Problems – Four examples with detailed explanation
12. Taming Word Problems – An Internet4Classsrooms WebQuest related to this standard
13. Teacher Dodgeball – Re-arrange the numbers and operational signs to form a correct equation in the time given. If you are correct, you will hit the teacher with the dodgeball and move on to a more challenging round. Defeat all five teachers and earn your dodgeball champion certificate.
14. Using Graphs, Equations, and Tables to Investigate the Elimination of Medicine from the Body: Modeling the Situation – Lesson plan from NCTM
15. Writing Equations – Sentences to translate into equations