A new and more circularly proof of a famous infinite product for pi.

Discover the story behind King Henry VIII's first marriage to Catherine of Aragon, his brother's widow. Learn how their union shaped the political landscape of England and set the stage for Henry's dramatic break from the Catholic...

Once Henry VII took the throne of England, his position as king was threatened almost immediately - starting with the first royal pretender, Lambert Simnel. Was the son of an Oxfordshire organ-maker really the son of George, Duke of...

Learn how Mary of York used Perkin Warbeck to threaten Charles VII's rule. Despite being a woman in a male-dominated world, Margaret used her charm, intelligence and political acumen to win over allies, aid her brother Edward's rule, and...

This English language learning video covers the basic use of numbers in everyday language. It introduces ordinal numbers, simple words, expressions, and tips.

In this lesson, students will learn how to simplify positive integer powers of the imaginary unit, "i". By considering the remainder when the exponent is divided by 4, students can easily determine the simplified value. The lesson...

The Phra Prang Sam Yot was built when Lopburi was under the control of the Khmer empire from Angkor. The monument was likely founded in the late 12th or early 13th century during the reign of King Jayavarman VII, the King who built...

Making music with 7th chord chains and advanced chord progressions in any style, from baroque to cocktail piano. The chain of 7ths has been used by composers since the Baroque period as a means of providing a rich sequence of 7th chords...

In this video, students will learn how to multiply exponential expressions by exploring patterns and applying the properties of exponents. The teacher explains the concept of exponents and the associative property of multiplication.

SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...

Master Solving a system of equations by graphing with no or infinite many solutions

In this video, the teacher explains how to simplify expressions involving the multiplication of exponential expressions. The students learn that when multiplying two terms with the same base, they can simply add their exponents. The...

Divide a fraction by a fraction using the number line.

👉 Learn how to solve multi-step equations with parenthesis. An equation is a statement stating that two values are equal. A multi-step equation is an equation which can be solved by applying multiple steps of operations to get to the...

In this video, students learn how to make rough comparisons of very large numbers using scientific notation. By understanding the concept of scientific notation and the power of 10, students can quickly estimate the magnitude of...

👉 Learn how to solve multi-step absolute value inequalities. The absolute value of a number is the positive value of the number. For instance, the absolute value of 2 is 2 and the absolute value of -2 is also 2. To solve an absolute...

How all the different types of chords can be inverted

The next step from triads is looking at sevenths chords and how to identify them in music.

A look at the four types of Seventh Chords

👉 Learn how to add and subtract mixed numbers. Mixed numbers are numbers with two parts: the whole number part and the fraction part. Mixed numbers are ways to represent improper fractions using proper fractions. To add or subtract mixed...

Fractions have two parts. The numerator and the denominator. The numerator is the number that is on top and the denominator is the number on the bottom. Fractions can be written in two main ways. The first one is called an ‘proper...

In this video, the teacher explains how to solve equations with one variable using the concepts of additive and multiplicative inverses. The teacher provides clear examples and step-by-step instructions on how to combine like terms,...

In this video, the teacher explains what makes a polynomial a polynomial. They define a polynomial as a set of expressions that follow a specific form, with non-negative integer exponents and coefficients. The teacher provides examples...

In this video, the teacher explains how to multiply polynomials and shows that the product of two polynomials is still a polynomial. The teacher uses the distributive property and combines like terms to demonstrate the process. The video...