How to use the circle of fifths to modulate and change keys. If we are writing or improvising a piece of music and we want to modulate to other keys, how do we decide which keys to move to? The Circle of 5ths not only explains the whole...

👉 Learn about dilations. Dilation is the transformation of a shape by a scale factor to produce an image that is similar to the original shape but is different in size from the original shape. A dilation that creates a larger image is...

This video discusses the topic of long-run costs in economics, specifically related to the concept of returns to scale. The video explains the difference between short-run and long-run factors of production and how this affects a firm's...

In this video, students learn how to solve linear equations by choosing between dividing or distributing. The teacher explains the properties of equality and demonstrates solving equations using both methods.

Food Fighter is the inspirational story of one woman who abandoned capitalism in favour of social activism. Ronni Kahn founded OzHarvest to wage war on food waste, and to expose an inconvenient truth: that four million tonnes of...

The video explains the concept of economies of scale in microeconomics. It describes how businesses can increase their production scale and reduce their unit costs over time by becoming more experienced in producing goods and services,...

How well do you know the circle of fifths? Test your knowledge with this short quiz. The Circle of Fifths tells you everything you need to know about major keys, minor keys, and key signatures. This music theory lesson presents a...

Music theory in ancient Mesopotamia

This video illustrates the many everyday ways we measure things, and the importance of measurement in science. Concepts and terminology: length, liquid, mass, scale, temperature, and time.

In this video lesson, students will learn how to read graphs by estimating between grid lines. The teacher emphasizes the importance of units and scale when interpreting graphs and provides a method for making accurate estimates. Through...

Through colorful animations and common everyday examples, this video helps students learn how to measure length and temperature using the metric system. Both the Celsius and Kelvin temperature scales are explained in depth. Emphasis is...

In this lesson, students will learn how architects create scale drawings using fractions and decimals. They will understand the concept of a scale factor and how it is used to enlarge or reduce dimensions.

The video discusses the concept of economies of scale in markets and how they can impact the structure of those markets. The video also examines the factors that contribute to managerial diseconomies, such as poor communication and...

Can you answer all the questions in this Circle of Fifths quiz? The Circle of Fifths tells you everything you need to know about major keys, minor keys, and key signatures. This music theory lesson presents a light-hearted quiz that is...

Multidisciplinary approach to developing next-generation space weather modeling tools, with the goal of a five-day forecast capability



Description: While Earth's weather reports center on precipitation,...

This series of videos explores the concepts of volume, mass, and density. The means by which volume and density are calculated is highlighted. Everyday examples of each make the concepts easy to understand.

Many musicians across the world enter for music exams. If you’re taking an exam how best can you prepare and what are the things to consider so you can give your best on the day? This music performance lesson reflects on Gareth's decades...

In this video lesson, students learn how to find fractional parts of a whole by representing distance measurements using diagrams and measurement scales. The teacher explains the concepts of numerators and denominators in fractions, and...

There are 3 minor scales, or more precisely, 3 variants of the minor scale because of how harmony and melody interact in Western musical tradition. Why do they exist and what are they? In this music theory lesson we explain the Natural...

This video is a review of Two Dimensional Vectors. This video goes over 6 examples that make use of unit vectors.

Through colorful animations and common everyday examples, this video helps students learn how to measure length and temperature using the metric system. Both the Celsius and Kelvin temperature scales are explained in depth. Emphasis is...

This engaging series of videos uses colorful animations and on-location footage to illustrate some of the amazing ways plants reproduce. The reproduction processes in bryophytes, ferns, gymnosperms, and angiosperms are highlighted....

This video is an educational tutorial on the pH scale. The presenter goes over the difference between strong acids and weak acids and explains how they dissociate in an aqueous solution. They also cover acid concentration, which is...

In this video, the presenter explains the fundamentals of labor markets and how economists study them. They discuss the downward sloping labor demand curve, and how higher wage rates cause firms to demand fewer workers. They also explain...