Calculating the Area of a Rectangle Using Square Units

This lesson teaches how to describe the area of a plane figure using square units. It begins with a review of plane figures and their attributes, then introduces the concept of area as a measurement distinct from perimeter. The lesson explains that area is the space within a closed shape and is measured in square units. It emphasizes that only closed shapes have measurable areas and demonstrates how square units are used to calculate the area of a rectangle. The lesson concludes with practical examples of using square units to determine area.

What is a plane figure and how is it defined?

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What attributes can be used to describe a plane figure?

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Explain the difference between area and perimeter.

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How do you determine the area of a rectangle?

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What does it mean for a shape to be a square unit?

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