Material Detail

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Talk or Text

In this lesson, students compare different costs associated with two cell phone plans. They write equations with 2 variables and graph to find the solution of the system of equations. They then analyze the meaning of the graph and discuss other factors involved in choosing a cell phone plan.


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Anhtai Huynh
Anhtai Huynh (Student)
13 years ago
After spending a good 10-20 minutes looking over the material, I realize this would be quite useful for students to understand a real-life application for math and making use of the equations for it. I looked through it briefly and followed the directions that is describing how to write the equation for that particular situation when comparing different plans. It's very well organized, much like a college syllabus, so it is easy to follow and navigate. The material accurately present concepts of graphing and how to apply a simple equation using the two factors to a graph, which can help us incorporate our understanding of it to harder and much more complicated problems. Although it is very short and intended more for the teacher as a teaching tool, it is still very easy to follow as it is broken down into clear sections, step by step, showing the methods and ways to approach the math.

Technical Remarks:

For a lesson, it's very well organized and easy to follow.
Time spent reviewing site: 10-20 minutes.