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Part 1 of Proof of Heron's Formula, Perimeter, Area, and Volume, Geometry Instructional VideoPart 1 of Proof of Heron's Formula, Perimeter, Area, and Volume, Geometry Instructional Video
Publisher
Khan Academy
Resource Details
Curator Rating
Educator Rating
Not yet Rated
Grade
9th - 12th
Subjects
Math
1 more...
Resource Type
Instructional Videos
Media Length
11:00
Audiences
For Teacher Use
1 more...
Duration
15 mins
Instructional Strategies
Flipped Classroom
1 more...
Accessibility
Closed Captions
1 more...
Year
2010
Usage Permissions
Creative Commons
BY-NC-SA: 3.0
cc
Instructional Video

Part 1 of Proof of Heron's Formula, Perimeter, Area, and Volume, Geometry

Curated and Reviewed by Lesson Planet

This video is the first installment in a series devoted to exploring Heron's Formula. It is a high-level experience that delves into proof using algebra. It demonstrates a step-by-step process for finding the area of a triangle using Heron's formula and another method. By using two different methods to solve the same problem, the idea that there may be multiple ways to calculate a correct answer is reinforced.

3 Views 0 Downloads

Concepts

heron's formula, area of triangles, area

Additional Tags

heron's formula, area of a triangle, sides of a triangle, math

Classroom Considerations

  • This video is hosted on YouTube

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Lesson Plan

An Area Formula for Triangles

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Activity

Triangle Area Patterns

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Combine algebraic and geometric strategies to find solutions. The task asks learners to find the coordinates of a third vertex of a triangle to create a triangle with a specific area. The project is a set of seven problems that...
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Instructional Video

Heron's Formula, Perimeter, Area, and Volume, Geometry

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Introducing the Heronês formula is the main objective of this lecture. Essentially, it describes how to solve a problem. Heron's formula is given, and then a problem is solved. Since the actual explanation of the formula will be given...
5 mins 9th - 10th Math
Instructional Video

Part 2 of Proof of Heron's Formula, Perimeter, Area, and Volume, Geometry

Khan Academy
Picking up where the prior installment in the series on HeronÕs formula ended, Sal provides a more detailed explanation.
12 mins 9th - 12th Math
Lesson Plan

Triangle Area

Shodor Education Foundation
While the lesson focuses on right triangles, this activity offers a great way to practice the area of all triangles through an interactive webpage. The activity begins with the class taking a square paper and cutting in in half; can they...
6th - 9th Math
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Instructional Video

Khan Academy: Geometry: Heron's Formula

Khan Academy
Demonstrates how to find the area of a triangle using Heron's formula. Practice problems available. [4:43]
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Activity

University of Georgia: Problem Solving With Heron's Formula

University of Georgia
From the University of Georgia, this tutorial provides exercises and problems using Heron's Formula for the area of a triangle, makes use of several problem representation methods, including a graph.
9th - 10th Math
CCSS: Adaptable
Lesson Plan

Dynamic Algebra

Curated OER
Explore 5 classical problems of algebra.  They will solve problems involving Heron's formula, fractional equations, vector equations, apollonius' sphere, and transversals. The idea is to lead to new perceptions and visual...
9th - 12th Math
CCSS: Designed
Handout

Wolfram Math World: Heron's Formula

Wolfram Research
This site provides a detailed overview of Heron's Formula. Content includes a definition, example, and formula.
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Lesson Plan

Triangle Area: No Height? Use the Sine

Alabama Learning Exchange
No height? No problem! Learners use their knowledge and a little help from GeoGebra to develop the Law of Sines formula. The Law of Sines helps to determine the height of triangles to calculate the area.
9th - 12th Math
CCSS: Designed
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