# 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.

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Do you need to calculate the rate at which something changes over time? Whether it's the change in the x-value over the change in the y-value of a line on a graph, or the distance travelled by a car over the course of an hour-long drive, you'll need a rate of change formula.

By Sascha Bos

Physicists use the displacement formula to find an object's change in position. It sounds simple, but calculating displacement can quickly get complicated.

By Sascha Bos

Frequency is a fundamental concept when you're talking about waves, whether that means electromagnetic waves like radio waves and visible light, or mechanical vibrations like sound waves.

By Marie Look

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The wavelength formula is a fundamental concept in physics, particularly in the study of waves and electromagnetic radiation.

By Yara Simón

In math, few skills are as practical as knowing how to do long division. It's the art of breaking down complex problems into manageable steps, making it an essential tool for students and adults alike.

We get it: You need help with the parabola equation because those graphs won't draw themselves. Here's how to draw a parabola from an equation.

By Yara Simón

Trying to figure out whether your research problem would benefit from qualitative vs. quantitative data? Learn about the differences and uses of each.

By Yara Simón

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Distinguishing between discrete vs. continuous data and situations that call for each data type is important in ensuring you get your desired results.

By Marie Look

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?

By Alia Hoyt

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?

By Mark Mancini

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

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?

By Mark Mancini

We'll show you both a quick and dirty way, and a precise, more complicated formula for converting Celsius to Fahrenheit (and vice versa).

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

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

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

By Mark Mancini

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.

By Mark Mancini

A perfect square is a number, but it can also be explained using an actual square.

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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.

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

By Mark Mancini

Finding the range of a set of numbers is an easy subtraction problem!

Real numbers are the opposite of imaginary numbers and include every number you can think of.

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The Fibonacci sequence has been a numerical sequence for millennia. But what does it have to do with sunflower seeds or rabbits?

A reinterpretation of an ancient Babylonian tablet shows that trigonometry might be 1,000 years older than thought. But there's some disagreement.