Music Matters
Having Fun with 12 Bar Blues - Music Theory
Having fun with the 12 bar blues. This music theory lesson explains how the 12 bar blues pattern works and how you can have hours of fun with 12 bar blues. We look at the basic chord scheme, how the 12 bar blues is constructed and then...
Odd Quartet
Open v Close Chords - Chord Voicing - Music Theory Crash Course
So far we have talked about how to build triads and seventh chords but today we are going to talk about how to voice those chords. There are two main kinds of chord voicing. Open chords and close chords. We talk about how to identify...
Music Matters
The Imperfect Cadence - Music Theory
Learn all about the imperfect cadence, also known as the half cadence, which chords it uses and how it sounds. Want to know about cadences? Want to know about the imperfect cadence in particular? Want to be able to write an imperfect...
Music Matters
How to Write Syncopated Rhythms - Music Composition
How to write syncopated rhythms. Syncopated rhythms add a great deal of interest and character to a piece of music but when should we write them and how do we write them. This music composition lesson shows two very different musical...
Professor Dave Explains
Circles: Radius, Diameter, Chords, Circumference, and Sectors
Calculations involving circles.
Music Matters
Naming Chords - Music Theory
How good are you at naming and identifying chords in a piece of music? This music theory lesson explains how to determine the key of a given piece of music and how to work out the chords that belong to that key. It then invites you to...
Bridgeman Arts
United States, c.1951: An orchestra plays to the beat of the conductor during a concert
United States, circa 1951: An orchestra plays to the beat of the conductor during a concert.
Bridgeman Arts
Australia, c.1951: An orchestra plays a tune during a concert
Australia, circa 1951: An orchestra plays a tune during a concert.
Curated Video
Ramone remembered
1. Exterior, Hollywood Forever Cemetery
2. Close-up Johnny Ramone remembrance banner, with pull out
3. Pan of observers
4. Medium shot of young Ramones fan
5. Medium shot of ceremony attendees in chairs
6. Wide shot of Ramone family,...
Curated Video
Reactions from HRW to removal of government by the military
A day after Thailand's army overthrew the caretaker government in a coup, questions abound about how the political crisis started and where it all stands.
John Sifton, the Human Rights Watch Advocacy Director for Asia, explained that...
Curated Video
Jamie Lee Curtis too scared to watch sci-fi, horror
JAMIE LEE CURTIS TOO SCARED TO WATCH SCI-FI, HORROR
Flipped Math
Unit 11 Review: Circles
Solve 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...
Flipped Math
Secants and Tangents
Put 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...
Flipped Math
Chords and Arcs
Congruence 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...
CK-12 Foundation
Segments from Chords: Lesson
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.
CK-12 Foundation
Angles On and Inside a Circle: Lesson
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.
CK-12 Foundation
Parts of Circles: Lesson
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...
CK-12 Foundation
Chords in Circles: Lesson
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...
Socratica
How Do You Find the Center of a Circle?
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...
3Blue1Brown
A Curious Pattern Indeed
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...
Mathed Up!
Area and Circumference of Circles
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...
Krista King Math
Intersecting Chords of Circles
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.
TED-Ed
Group Theory 101: How to Play a Rubik’s Cube Like a Piano
The strong connections between math and music are explored in this short video that uses group theory to visualize musical chords. Makes you wonder what Arthur Rubinstein would have thought of all this.
Curated OER
What is a Circle?
A circle is a set of all the points that are equal distance from a center point. Learn the definition of some of the terms that are associated with a circle: diameter, radius, chord.