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Music Matters
Debussys Use of the Whole Tone Scale Composer Insights
How Debussy makes use of the whole tone scale to achieve his signature evocative sound. We look through his Piano Prelude “Voiles”. The use of low dynamics, slow tempo and plenty of rhythmic space are just three of the ingredients...
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...
Super Geek Heroes
Musical Instruments with Ronnie Rock
Fun 3D animated learning episodes to support the early years development areas of Expressive Arts & Design. Ronnie Rock is a Super Geek Hero on a mission to learn! Ronnie sings about his favourite musical instruments by playing them one...
Music Matters
How Chopin Creates Emotion in his Music - Composer Insights
How does Chopin create and express emotion in his music? We delve into the mind of the composer and explore Chopin’s Nocturne in G minor, explaining how Chopin delivers emotional impact through his approach to harmony, melodic...
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...
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.
Curated OER
Radius, Chord, Diameter, and Secant
What do a secant, chord, diameter, and radius all have in common? They are all components or measurements of a circle! This clip quickly defines each of these terms using verbal, written, and diagram examples.
Khan Academy
Khan Academy: Geometry: Language and Notation of the Circle
Formally defines a circle and different parts of a circle. Identifies the proper notation for naming different parts of a circle. [11:12]
Sophia Learning
Sophia: Terms Relating to Circles
This lesson will define the terms center, diameter, radius, chord, circumference, and pi. Students can watch a video tutorial and then take an online quiz.
Sophia Learning
Sophia: Circle Vocab 1
Parts of a circle are defined in this lesson. Take a quiz to assess learning.
Khan Academy
Khan Academy: Introduction to Euclidean Geometry: Language of the Circle
In this video student learn formal definition of a circle including tangent and secant lines, diameters, radii, major and minor arcs.
Loyola University Chicago
Math Flix: Circle Vocabulary
This QuickTime movie provides an opportunity to learn about the vocabulary of a circle. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.