# Math Concepts

Math is often called the universal language because no matter where you're from, a better understanding of math means a better understanding of the world around you. Learn about math concepts such as addition, subtraction, fractions, ratios and more.

Whether you're a math whiz or not, there are some pretty cool number theories, beliefs and coincidences to appreciate. How down with digits are you?

The scutoid is kind of like the Higgs boson. Researchers theorized the new shape existed. And then they went looking for it.

Most of the world uses meters, apart from the U.S. and a few other countries. So what's an easy way to convert from meters to feet and vice versa?

There was a time (4,000 years ago) when simply being able to add might get your name on a clay tablet or help you accumulate vast wealth.

A unit circle is an important part of trigonometry and can define right angle relationships known as sine, cosine and tangent.

Many people get speed and velocity confused. It's no surprise because the terms are often used interchangeably. But they're not quite the same thing. So how do you find the velocity of an object?

Scientists have come up with a new formula to describe the shape of every egg in the world, which will have applications in fields from art and technology to architecture and agriculture.

Numerators and denominators, oh my! It sounds complicated, but learning how to multiply fractions is easy. It just takes three simple steps.

Converting kilogram measurements into pounds is not hard. We'll show you the textbook way plus two quick-and-dirty shortcuts.

Dividing fractions is easy once you learn a couple of rules and remember three words — keep, change and flip.

Sir Isaac Newton's Law of Universal Gravitation helps put the laws of gravity into a mathematical formula. And the gravitational constant is the "G" in that formula.

A multiplication table is an easy-to-use grid of numbers that can help you learn to multiply quickly by using the chart and, eventually, your memory.

Both degrees and radians represent the measure of an angle in geometry. So, how do you convert one to the other?

Whether the circle is as big as planet Mars or as small as a tennis ball, the ratio of its circumference divided by its diameter will always equal pi (3.14). But why?

You use the number zero all the time, but it may surprise you to learn that it sometimes isn't a number at all. It may surprise you even more to learn that it was all but invented. See what else surprises you about zero in this article.

Mathematics achieves the sublime. Sometimes, as with tessellations, it rises to art. In their simplest form, tessellations consist of a single shape that repeats over a two-dimensional plane without any gaps. Why was M.C. Escher so fixated on them?

Fractals have been around forever but were only defined in the last quarter of the 20th century. Think you can wrap your brain around how fractals work?