Divide wholes into equal-sized pieces to create unit fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-third-grade-math/cc-3rd-fractions-topic/cc-3rd-fractions-intro/e/that-s-not-fair-?utm_source=YT&utm_medium=Desc&utm_campaign=3rdgrade Watch the next lesson: https://www.khanacademy.org/math/cc-third-grade-math/cc-3rd-fractions-topic/cc-3rd-fractions-meaning/v/more-than-one-equal-section?utm_source=YT&utm_medium=Desc&utm_campaign=3rdgrade Missed the previous lesson? https://www.khanacademy.org/math/cc-third-grade-math/cc-3rd-mult-div-topic/cc-3rd-grade-multiplying-by-10/v/multiplying-by-multiples-of-10?utm_source=YT&utm_medium=Desc&utm_campaign=3rdgrade Grade 3rd on Khan Academy: We know you've been rocking through 2nd grade adding and subtracting all kinds of whole numbers (up to 2 digits, right?). That's awesome! In 3rd grade math we want you to start using bigger numbers and start multiplying and dividing, too. By the way, did you know that some numbers aren’t actually “whole?” They’re “partially whole.” We call them fractions! We want you to start playing around and having fun with those, too. There's also area, perimeter, and place value to be discovered. Whew. We have so much to do and can't wait to do it with you. Let's go! ... https://www.youtube.com/watch?v=jgWqSjgMAtw Note: All Khan Academy content is available for free at (www.khanacademy.org)

Sal analyzes the rate of change of various exponential models, where the function that models the situation needs some manipulation. Watch the next lesson: https://www.khanacademy.org/math/high-school-math/math2/math2-exponential-growth/math2-exponential-rate-advanced/v/interpreting-change-in-exponential-models-changing-units?utm_source=YT&utm_medium=Desc&utm_campaign=highschoolmath Missed the previous lesson? https://www.khanacademy.org/math/high-school-math/math2/math2-exponential-growth/math2-construct-exponential-models/v/decay-of-cesium-137-example?utm_source=YT&utm_medium=Desc&utm_campaign=highschoolmath High School Math on Khan Academy: Did you realize that the word "algebra" comes from Arabic (just like "algorithm" and "al jazeera" and "Aladdin")? And what is so great about algebra anyway? This tutorial doesn't explore algebra so much as it introduces the history and ideas that underpin it. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything. ... https://www.youtube.com/watch?v=q20v5ZBsTk8 Note: All Khan Academy content is available for free at (www.khanacademy.org)