Just how big of a TV do you need?! The task at hand asks individuals to compare the area of 80-inch and 55-inch TVs. The length of the TV is given and learners must use the Pythagorean Theorem to determine the width to calculate the areas.

Concepts

pythagorean theorem, diagonal lines, rectangles, scale, area, area of rectangles

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Additional Tags

math

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Instructional Ideas

• Discuss whether the TVs are similar
• Incorporate as a performance task when studying the Pythagorean Theorem

Classroom Considerations

• Requires a strong understanding of how to find a missing side length using the Pythagorean Theorem

Pros

• Uses a topic of interest to most pupils as a means of motivation
• Adaptable to different grade levels

Cons

• None

Common Core

8.G.B.6 8.G.B.7 8.G.B.8