Comparing fractions on a number line Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually-comparing-fractions?utm_source=YT&utm_medium=Desc&utm_campaign=4thgrade Watch the next lesson: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/v/comparing-fractions-visually-with-pies?utm_source=YT&utm_medium=Desc&utm_campaign=4thgrade Missed the previous lesson? https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/v/comparing-fractions-visually-with-a-bar?utm_source=YT&utm_medium=Desc&utm_campaign=4thgrade Grade 4th on Khan Academy: 4th grade is the time to start really fine-tuning your arithmetic skills. Not only will you be a multi-digit addition and subtraction rockstar, but you'll extend the multiplication and division that you started in 3rd grade to several digits. You'll also discover that you sometimes have something left over (called a "remainder") when you divide. In 3rd grade you learned what a fraction is. Now you'll start adding, subtracting, multiplying, and comparing them. You'll also see how they relate to decimals. On other fronts, you'll learn how to convert between different units (which is super important when comparing the size and speed of robot unicorns in different countries) and continue your journey thinking about various shapes in two dimensions. Some of the foundational concepts of geometry (like lines, rays and angles) also get introduced. As always, we'll round this out with a healthy dose of applied word problems and explorations of number patterns and properties (including the ideas of factors, multiples and prime numbers). The fun must not stop! (Content was selected for this grade level based on a typical curriculum in the United States.) ... https://www.youtube.com/watch?v=7vWzd-ZV6-Q Note: All Khan Academy content is available for free at (www.khanacademy.org)

Join Khan Academy's Aviv Weiss, Sarah Robertson, and ELA teacher, in Hobart, IN, Maddie Bartsch as they show you how Khanmigo can help supercharge ELA instruction. 00:00 Hello & Introductions 01:42 - Khan Academy’s approach to AI 04:15 - Agenda 05:26 The reality of ELA classroom instruction 08:45 Introduction & Demo of Khanmigo’s Essay Feedback feature 18:29 What sets Khanmigo apart from other AI tools 18:58 Ms. Bartsch's experience using Khanmigo 20:39 Examples of student interaction with Khanmigo 25:40 How Khanmigo saves teachers time 34:30 A preview of what’s next for Khanmigo 37:58 - How to access Khanmigo To try Khanmigo and bring it into your school, visit: blog.khanacademy.org/teacher-khanmigo Use promo code "AI4ELA" for a free one-month trial. ... https://www.youtube.com/watch?v=5RlrzSAEUqs Note: All Khan Academy content is available for free at (www.khanacademy.org)

Lindsay finds a pattern from multiplying whole numbers by 10. Practice this yourself on Khan Academy right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-place-value-rounding/cc-4th-10-relates-to-place-value/e/multiplying-by-10 Watch the next lesson: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-place-value-rounding/cc-4th-10-relates-to-place-value/v/understanding-place-value-1-exercise Missed the previous lesson? https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-place-value-rounding/cc-4th-place-value-intro/v/place-value-1 4th grade math on Khan Academy: 4th grade is the time to start really fine-tuning your arithmetic skills. Not only will you be a multi-digit addition and subtraction rockstar, but you'll extend the multiplication and division that you started in 3rd grade to several digits. You'll also discover that you sometimes have something left over (called a "remainder") when you divide. In 3rd grade you learned what a fraction is. Now you'll start adding, subtracting, multiplying, and comparing them. You'll also see how they relate to decimals. On other fronts, you'll learn how to convert between different units (which is super important when comparing the size and speed of robot unicorns in different countries) and continue your journey thinking about various shapes in two dimensions. Some of the foundational concepts of geometry (like lines, rays and angles) also get introduced. As always, we'll round this out with a healthy dose of applied word problems and explorations of number patterns and properties (including the ideas of factors, multiples and prime numbers). The fun must not stop! (Content was selected for this grade level based on a typical curriculum in the United States.) ... https://www.youtube.com/watch?v=TXaWqy52dZY Note: All Khan Academy content is available for free at (www.khanacademy.org)

Using Plank's equation and the relationship between speed, frequency and wavelength of light to determine the energy difference between electron shells (which is equivalent to the energy of the photon emitted when an electron goes from the higher energy state to the lower one). ... https://www.youtube.com/watch?v=wVfR5knAKRM Note: All Khan Academy content is available for free at (www.khanacademy.org)