Refine Your Results

Content Curators

Grades

Subjects

Resource Types

Standards

Now... gain access to over 2 Million curated educational videos and 500,000 educator reviews to free & open educational resources

Get a 10 Day Free Trial

85 resources with the concept chords

Videos (Over 2 Million Educational Videos Available)
Women's History Activator: Eleanor Roosevelt Video
5:34
Women's History Activator: Eleanor Roosevelt
Three-Dimensional Coordinates and the Right-Hand Rule Video
6:09
Three-Dimensional Coordinates and the...
Algebra 50 - Three Variable Systems in the Real World - Problem 2 Video
10:23
Algebra 50 - Three Variable Systems in the...
Other Resource Types (85)
+
23 Items in Unit Module
EngageNY

EngageNY Geometry Module 5: Circles With and Without Coordinates

For Teachers 9th - 12th Standards
A comprehensive 21-lesson math unit challenges high schoolers to wrap their heads around the geometry of circles. Building on a prior understanding of similarity and congruence, length and area, and the properties of geometric figures,...
+
Lesson Planet: Curated OER

Circles

For Students 9th - 12th Standards
Don't circle around the topic, but get right to the center with tons of practice regarding circles in geometry. The note-incorporated instructional activity provides guided practice through many topics such as central angles, inscribed...
+
2 In 2 Collections 13:36
Lesson Planet: Curated OER

Unit 11 Review: Circles

For Students 9th - 12th Standards
New ReviewSolve problems around a circle. Pupils watch a video that shows how to apply concepts about circles and related angles and segments to find solutions to word problems. Learners then review the different concepts from the unit in...
+
2 In 2 Collections 16:21
Lesson Planet: Curated OER

Secants and Tangents

For Students 9th - 12th Standards
New ReviewPut the vertex in, put the vertex out. Pupils explore theorems about the relationships of lengths of segments and angles of line segments that intersect inside or outside the circle. Learners use the theorems to solve problems involving...
+
19:13
Lesson Planet: Curated OER

Chords and Arcs

For Students 9th - 12th Standards
New ReviewCongruence breeds congruence. Pupils learn three more circle theorems dealing with congruent chords and arcs. Learners use the theorems to find the measures of chords and arcs in circles by applying previously learned concepts in the...
+
Lesson Planet: Curated OER

Songs, Sounds and Stories from the Georgia Sea Islands

For Teachers K - 12th
American music is the result of the influence of many cultures, including the traditions brought by the African slaves. Young scholars study the polyrhythms, the call-and-response format, and the vocal improvisations of the Gullah...
+
2:54
Lesson Planet: Curated OER

Segments from Chords: Lesson

For Students 9th - 11th Standards
Strike a chord length. The section of a larger playlist on geometry introduces the relationship relating lengths of intersecting chords. Using the relationship, the video shows how to find lengths of segments of the chords.
+
3:10
Lesson Planet: Curated OER

Angles On and Inside a Circle: Lesson

For Students 9th - 11th Standards
A video introduces methods to find the measure of angles whose vertex is on and inside a circle. Within examples, the section of a larger playlist on basic geometry incorporates several angle measurement theorems.
+
Lesson Planet: Curated OER

Project-Based Songwriting

For Teachers 9th - 12th
Project-based learning in a music theory class? Take note. Young songwriters compose, record, copyright, and promote their original songs. They even design their own CD cover.
+
Lesson Planet: Curated OER

Using Music to Tell a Story or Describe a Scene

For Teachers 9th - Higher Ed Standards
Young composers demonstrate their understanding of the stylistic features of descriptive music, including pitch, tempo, dynamics, rhythm, and timbre, by developing a melody and countermelody for a main character in a story. As part of...
+
4:16
Lesson Planet: Curated OER

Parts of Circles: Lesson

For Students 6th - 10th
Start off with the basic parts. The section of a larger playlist covering essential geometry concepts identifies and provides the definitions of the basic parts of a circles. Using drawings, the video illustrates the different parts and...
+
4:59
Lesson Planet: Curated OER

Chords in Circles: Lesson

For Students 8th - 11th Standards
Strike a chord with four theorems. The segment of a playlist on geometry introduces four basic theorems about chords in a circle. Theorems include the relationships between diameters and chords, congruent chords and arcs, and congruent...
+
4:14
Lesson Planet: Curated OER

How Do You Find the Center of a Circle?

For Students 9th - 12th Standards
The center of the circle is the center of attention for the resource. A brief video in the Socratica Geometry playlist shows how to find the center of a circle not on the coordinate plane. The method here is to construct the...
+
1:49
Lesson Planet: Curated OER

A Curious Pattern Indeed

For Students 9th - 12th Standards
1, 2, 4, 8, 16, 31 ... hold it, that does not seem right. The resource presents the pattern of the number of sections created in a circle by connecting ever-increasing numbers of points on the circle. The video points out that the...
+
Lesson Planet: Curated OER

Length of a Chord: Distance Across a Ferris Wheel

For Students 9th - 12th Standards
An interactive presents two friends on a ferris wheel with the task of finding the distance between the them. Pupils create the chord between the two friends and calculate its lengths using trigonometric ratios.
+
Lesson Planet: Curated OER

Angles, Arcs, and Segments in Circles

For Teachers 9th - 11th Standards
Investigate relationships between angles, arcs, and segments in circles. Pupils use geometry software to discover the relationships between angles, arcs, and segments associated with circles. Class members use similar triangles to...
+
Lesson Planet: Curated OER

Quadratic Curve of Best Fit

For Teachers 10th - 12th Standards
Class members create a table of the number of chords that can be drawn given the number of points on a circle. Pupils analyze the data created, find a function to fit to it, and use the function to make further predictions.
+
Lesson Planet: Curated OER

Area and Circumference of Circles

For Students 8th - 10th Standards
Don't go around and around, help your class determine amounts around and in a circle with a video that connects circumference to the perimeter or the distance around an object. The resource includes 14 questions dealing with circles and...
+
4:01
Lesson Planet: Curated OER

Intersecting Chords of Circles

For Students 9th - 12th Standards
Strike a chord with your classes! Use the video to demonstrate the relationship between intersecting chords in a circle. The instructor includes an example that involves a quadratic equation and extraneous solution. 
+
Lesson Planet: Curated OER

Arcs and Angles

For Teachers 9th - 12th
Noah didn't construct this kind of arc. High school scholars first explore how angles can be formed in circles. They then learn relationships between angles and arcs by conducting an exploratory activity where they position and draw arcs...
+
1 In 1 Collection
EngageNY

Geometry Module 5: End-of-Module Assessment

For Teachers 9th - 12th Standards
The lessons are complete. Learners take an end-of-module assessment in the last installment of a 23-part module. Questions contain multiple parts, each assessing different aspects of the module.
+
1 In 1 Collection
EngageNY

Secant Lines; Secant Lines That Meet Inside a Circle

For Teachers 9th - 12th Standards
Young mathematicians identify different cases of intersecting secant lines. They then investigate the case where secant lines meet inside a circle.
+
1 In 1 Collection
EngageNY

Geometry Module 5: Mid-Module Assessment

For Teachers 9th - 12th Standards
How can you formally assess understanding of circle concepts? Pupils take a mid-module assessment containing five questions, each with multiple parts.
+
1 In 1 Collection
EngageNY

Arcs and Chords

For Teachers 9th - 10th Standards
You've investigated relationships between chords, radii, and diameters—now it's time for arcs. Learners investigate relationships between arcs and chords. Learners then prove that congruent chords have congruent arcs, congruent arcs have...