Khan Academy What Is

What Is Khan Academy and How the "What Is" Questions Actually Work

Khan Academy is a free educational platform covering math, science, computing, economics, and more. The "What Is" type of question you encounter there is one of their standard exercise formats where students are asked to define or identify a concept. It sounds simple, but the way these questions are structured and graded can trip people up faster than the actual content. These questions appear primarily in the earlier units of each course. When you open a skill, you'll see blocks like "What is a variable?" or "What is the y-intercept?" The format gives you a multiple-choice or drag-and-drop interface where you have to match the right definition or identify the correct example. The answers are algorithmically checked, meaning the system compares your selection against a predefined set of correct responses. I ran into a specific issue last year while helping someone prepare for a basic algebra placement test. The "What Is" question about like terms had answer choices that looked nearly identical in wording. The correct answer was the one that said "terms with the same variable raised to the same power," but two other options used almost the same phrasing with slightly wrong exponents listed. The system would mark any non-exact match as wrong. My workaround was to have them read every word in each option aloud before selecting anything. That alone caught three near-miss distractors in a single question block.

The platform rewards careful reading here more than raw knowledge. You don't need to derive anything. You need to match the exact phrasing Khan Academy has programmed as correct. That distinction matters because students who overthink these questions tend to second-guess themselves into picking a wrong answer that sounds plausible but isn't verbatim what the lesson taught.

How to actually use Khan Academy What Is effectively

Start by watching the associated video before touching the practice problems. The videos lay out the exact terminology the questions will use. If you skip the video and go straight to the exercises, you'll guess based on your own wording instead of theirs. That mismatch is the number one reason people get these questions wrong even when they conceptually understand the material. When you hit a "What Is" section, work through them in order. Each question builds a vocabulary foundation that later computation questions depend on. Skipping them creates gaps. I've seen students who breezed past all the definition questions then struggle for twenty minutes on an equation problem because they couldn't quickly identify what a coefficient was when it appeared in context. If you get stuck, the hint button gives you a step-by-step nudge rather than just the answer. Use it. The hints are actually well-written and often restate the concept in a clearer way than the original video does. Only check the solution button when you've exhausted the hints and still don't understand the reasoning.

For the download question that comes up sometimes, you don't need to download anything to use Khan Academy. The platform runs entirely in a browser. There's an official mobile app available on iOS and Android if you want offline access to select videos, but the exercise system requires an internet connection. Be careful of third-party sites claiming to offer Khan Academy downloads. They're not affiliated and often bundle adware.

Pitfalls and limitations you should know about

Khan Academy's "What Is" questions don't always reflect how exams are actually structured. Standardized tests like the SAT or state assessments might present the same concept in a paragraph-based format rather than a clean multiple-choice definition question. Doing well on Khan Academy's definitional exercises doesn't automatically translate to handling those formats under time pressure. Another limitation is the pacing. The platform uses a mastery system that locks newer skills until you demonstrate proficiency on older ones. This works for most students, but it can become a bottleneck if you're preparing for a test on a tight schedule. You might know the material ahead but still be forced to grind through prerequisite exercises to unlock what you actually need to practice. The content quality is generally solid for subjects like math and basic science, but the deeper courses in areas like computer science and economics are less comprehensive compared to dedicated platforms. If you're studying those subjects at an advanced level, Khan Academy works as a supplement but shouldn't be your only resource.

For students who finish the available exercises quickly and still want more challenge, I'd recommend pairing Khan Academy with textbook problems or past exam papers. The platform is designed for building foundational fluency, not for pushing advanced learners to the edge of their subjects.