Khan Academy
Foci of an Ellipse, Conic Sections, Algebra II
The foci of an ellipse are explored in this video. First, foci are shown as the two points on the central axis such that the sum of the distance from a point on the ellipse and the foci points is the same as the distance from any point...
Curated OER
Foci of a Hyperbola
In this video, Sal defines the vertex and the foci of a hyperbola, and shows how to locate both. By comparing the hyperbola to an ellipse throughout the video, the listener sees the similarities between these two conic sections. This...
Khan Academy
Conic Sections: Intro to Circles
This video explores the equation of a circle by first looking at the equation of a circle with the center at the origin and then building upon that, equations of circles that are shifted off the origin.
Curated OER
Conic Sections: Hyperbolas 3
Continuing with the study of graphing hyperbolas, Sal shows an example of graphing a parabola that is centered at a point off the origin. By looking at the equation, first without shifting it, he helps listeners develop an intuitive...
Curated OER
Conic Sections: Hyperbolas 2
Here is an example in this video of graphing a hyperbola centered at the origin. First, Sal shows solving for the equations of the asymptotes and then shows how to determine the direction of the hyperbola. He takes the approach of not...
Khan Academy
Proof: Hyperbola Foci, Conic Sections, Algebra II
In a video that is quite involved, algebraically, Sal proves that the distance of the foci from the center of a hyperbola is the square root of a2+b2. Since the algebra shown here is challenging, this video might be appropriate as an...
Khan Academy
Foci of an Ellipse, Conic Sections, Algebra II
The foci of an ellipse are explored in this video. First, foci are shown as the two points on the central axis such that the sum of the distance from a point on the ellipse and the foci points is the same as the distance from any point...
Khan Academy
Foci of a Hyperbola, Conic Sections, Algebra II
Sal defines a hyperbola's vertex and foci in this video and shows how to locate both. By comparing the hyperbola to an ellipse throughout the video, the listener sees the similarities between these two conic sections. This approach makes...
Curated OER
Conic Sections: Intro to Hyperbolas
In this video, Sal starts with the equation of a hyperbola by first comparing it to the equation of the circle, and ellipse. He then shows how to find the equation of the asymptotes by solving for y. He also shows a few intuitive ways to...
Curated OER
Conic Sections: Intro to Circles
The equation of a circle is explored in this video by looking first at the equation of a circle with the center at the origin; then building upon that, equations of circles that are shifted off the origin.
Educator.com
Volumes by Washers
Here's an AP Calculus resource that works an example problem of finding the volume where the cross sections of a solid are washer shaped. In the example the axis of rotation is vertical, creating horizontal washers.
Virtual Nerd
What is an Ellipse?
This video answers the question, What is an ellipse? It gives a definition of an ellipse, shows the ellipses relation of a plane to a cone, and the names of different parts of the ellipse.
Khan Academy
Khan Academy: Algebra Ii: Conic Sections: Hyperbola and Parabola Examples
A video lesson that goes through four example problems dealing with conic sections. Topics covered include: finding the vertex of a parabola from its equation; finding the asymptotes of a hyperbola and then sketching its graph;...
Khan Academy
Khan Academy: Algebra: Conic Sections: Tangent Line Hyperbola Relationship
A video lesson showing the algebraic relationship between the equation of an arbitrary hyperbola and its arbitrary tangent line. [10:04]
Khan Academy
Khan Academy: Algebra: Conic Sections: Introduction to Conic Sections
A video lesson introducing conic sections. Includes a sketch of each of the four fundamental conic sections in two dimensions. Also explains why they are called conic sections by illustrating how each is the intersection of a cone and a...
Khan Academy
Khan Academy: Algebra: Conic Sections: Foci of an Ellipse
A video lesson exploring the foci of an ellipse. The formula for finding the foci is derived algebraically and then applied to a specific ellipse equation. [13:49]
Curated OER
Zona Land: Conic Sections: The Hyperbola
View a graph of the hyperbola and a picture of how the plane intersects the cone and forms the hyperbolic conic section.
Sophia Learning
Sophia: Finding the Equation for an Ellipse: Lesson 3
This lesson explains how to find the equation for an ellipse given its foci and vertices. It is 3 of 4 in the series titled "Finding The Equation For An Ellipse." [7:45]
Khan Academy
Khan Academy: Algebra: Conic Sections: Intro to Circles
The video tutorial discusses conic sections. Students learn about circles. The resource consists of examples with detailed explanations. (9:04).
Virtual Nerd
Virtual Nerd: What Are Conic Sections?
Learn about the different types of conic sections and how they are formed by watching this video tutorial. [5:42]
Khan Academy
Khan Academy: Algebra: Identifying Conics 2
The video tutorial discusses conic sections. Students learn how to identify and graph conic sections The resource consists of an example with a detailed explanation. [11:28]
Khan Academy
Khan Academy: Algebra: Identifying Conics 3
The video tutorial discusses conic sections. Students learn how to identify and graph conic sections The resource consists of examples with detailed explanations. [11:34]
Khan Academy
Khan Academy: Algebra: Conic Sections: Hyperbolas 2
The video tutorial [7:29] discusses conic sections. Students learn about hyperbolas. The resource consists of examples with detailed explanations.
