Teaching Surface Area & Volume

Teaching Surface Area & Volume
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  • 0:03 Keeping it Simple
  • 0:35 Area vs. Surface Area
  • 1:59 Volume
  • 3:30 Objects Other Than Cubes
  • 4:17 Lesson Summary
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Lesson Transcript
Instructor: Kerry Gray

Kerry has been a teacher and an administrator for more than twenty years. She has a Master of Education degree.

The mathematical concepts of surface area and volume are often taught in tandem. In this lesson, you'll find strategies for teachers to use as a foundation when instructing students in the classroom setting.

Keeping it Simple

Surface area and volume are mathematical concepts that are usually taught in unison. Although they may sound abstract, instructing students on how to conceptualize them can be achieved by building the right foundation. It is best to teach these concepts using visual aids rather than formulas to help with context. The combination of visual aids with their corresponding formulas, as well as real world application, will help students gain a thorough understanding of these mathematical concepts.

Area vs. Surface Area

Let's begin by reviewing the concepts. Area is defined as the size of the surface of a two-dimensional object. Students find the area of an object by multiplying the length times the width. For example, if a student's desk is three feet long and two feet wide, the area would be six feet squared.

What if the student wants to measure his pencil box? The pencil box is a three-dimensional object because it has length, height, and width. The surface area of a three-dimensional object is calculated by adding the areas of all sides. Therefore, if the pencil box is six inches long, four inches wide, and two inches tall, the student will use the formula 2ab + 2ac + 2bc to calculate the surface area. In other words 2(6 x 4) + 2(6 x 2) + 2(4 x 2) = 48 + 24 + 16 = 88 inches squared.

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