We look at two common real-life situations, and find two variables in each that change in relationship to one another. Then, we write an equation relating the two variables. Then we use a table to write down some values for the variables from the equation, and lastly plot those points to make a graph.
The first situation says that one light bulb costs $4. We consider the two variables: the number of light bulbs and the cost.
In the other situation, you bicycle at the speed of 15 km/h. In this case, the two variables are time and distance.
This lesson is intended for 6th grade math. The first part, at https://www.youtube.com/watch?v=4FUZZ1yKHCo , is an introduction to equations that have two variables.
This lesson fits with the Common Core Math Standard 6.EE.9.
Tagged under: variables,6.EE.9,6th grade,math,table,graph,plot,equation
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