Mark Twain has been a household name since the nineteenth century. Known for the bestselling adventures of Huckleberry Finn and Tom Sawyer, Twain has also gained popularity for the pithy words of wisdom he shared.

Looking for games that your toddler will both enjoy and gain important skills from? We’ve got you covered! In this guide, we go over 11 of the best toddler learning games. These educational games for toddlers can be played with few materials, one or more children, and toddlers of varying age ranges. For each game, we explain what skills it will teach toddlers and give instructions on how to set up and play the game.

Can’t get enough of physics, calculus, or computer science? Then a career in STEM sounds like it'd be the perfect fit for you. In this comprehensive guide, we go over the top 10 STEM careers and give you an even more extensive STEM careers list of more than 100 jobs. We'll then wrap up with a step-by-step guide to getting a STEM career.

But first, what exactly is STEM? And what is a STEM career?

You’ve likely seen the word "recurring," but what about "reoccurring"? Is this word just a synonym for the former, or does it mean something different? In actuality, there's a lot to learn when it comes to reoccurring vs recurring.

Read on to get more information about the similarities and differences between these two words, what they each look like when used in writing, and how you can know when and how to use them.

What’s a googol, and does it have any relation to that similarly-named website? And what about a googolplex, how many zeros does it have? In this guide, we’ll give you googolplex and googol definitions, show how you can write them out, explain how they’re useful, and give examples on how you can start to understand huge numbers like these.

Everyone knows that scores on the SAT can make or break your college admissions chances, but can they measure your innate cognitive abilities? What do they really say about your potential?

In this article, I'll tell you what SAT scores can and can't measure and provide advice about when you might use them to estimate your own capabilities.

Dogs are cute! Who hasn’t taken a moment to doodle their favorite pooch on the side of their paper before? But like many animals, dogs can be hard to draw well, especially from memory.

If you are trying to up your drawing skill, this guide for how to draw a dog is for you! We’ll cover all the basics of learning to draw animals and dogs in particular, and walk you through drawing a dog step by step.

If you’re interested in studying a field such as biology or computer engineering, knowing how to convert nanometers to meters (or nm to m) will be a vital skill to have.

In this guide, we'll go over exactly what a nanometer is and what it measures. We’ll then give you three methods you can use for converting nm to m. Finally, we’ll provide you with a chart that shows various conversions from nanometers to millimeters, centimeters, decimeters, and more.

Studying for the ACT on your own can be intimidating, especially if you’ve never taken a test like it before. Fortunately, there’s always the option of enrolling in an ACT prep class.

We go over the five best ACT prep courses and explain their biggest pros and cons. Then, we give you four tips for ensuring you get the most out of the ACT prep class you decide to take.

You’ve more than likely seen a rainbow after some rain on a sunny day. But what are the colors of the rainbow in order? And what causes a rainbow to form? We’ll explain everything you need to know about the rainbow color order, including what ROYGBIV means, why rainbows exist, and whether or not the rainbow order will ever change.

Have you seen images of alchemy symbols and want to know more about what they mean? Alchemy element symbols have been around for centuries, and people are often interested in them because they contain some of the mystique the field of alchemy does.

But what do those symbols mean? And how were the elements they represent used by alchemists? In this guide we’ll give a background on alchemy and alchemy symbols, then we’ll cover every major alchemy symbol, including what it stood for, the properties it was associated with, and any interesting facts that go along with the alchemy symbols and meanings.

You know it's a great idea to prep for the SAT or ACT. After all, for the majority of students, it's the most time-efficient way to increase their college admission chances. But with so many ways you can prep for your test, it can be difficult to figure out which method will be the best for you. Obviously, some methods are generally thought to be more effective than others.

Still, every single SAT/ACT prep method out there has certain strengths. For some students tutoring is by far the best, whereas for others self-study is clearly optimal. Ultimately, which one you should choose will depend on your learning style, circumstances, and budget—we can help you figure this out here.

Are you studying commensalism in biology class and looking for a good commensalism definition? Commensalism is one of the trickier types of symbiosis to understand, but we'll break it down for you. Read this article to discover what commensalism is, the different types of commensalism, commensalism examples in nature, and the other types of symbiosis and how they differ from commensalism.

Whether you’re preparing for a geography exam or simply want to learn more about your friendly neighbor to the north, we’ve got you covered. In this guide, we'll answer an important question everyone should know the answer to: what is the capital of Canada? In addition, we'll explain how this place came to be the capital city of Canada and what all the capital cities of the Canadian provinces and territories are currently.

What is a vacuole and what does it do? A vacuole is a structure found in animal, plant, bacteria, protist, and fungi cells. It’s one of the largest organelles found in cells, and it’s shaped like a large sac. Vacuoles have a simple structure: they are surrounded by a thin membrane and filled with fluid and any molecules they take in. They look similar to vesicles, another organelle, because both are membrane-bound sacs, but vacuoles are significantly larger than vesicles and are formed when multiple vesicles fuse together.