Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off! ... https://www.youtube.com/watch?v=WPimvspI0_c Note: All Khan Academy content is available for free at (www.khanacademy.org)
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/geometry/similarity/similarity-and-transformations/e/exploring-angle-preserving-transformations-and-similarity?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Watch the next lesson: https://www.khanacademy.org/math/geometry/similarity/similarity-and-transformations/v/quadrilateral-similarity-by-showing-congruent-angles?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Missed the previous lesson?
https://www.khanacademy.org/math/geometry/congruent-triangles/isoscleles_equil/v/example-involving-an-isosceles-triangle-and-parallel-lines?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry.
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https://www.youtube.com/watch?v=6p1lweGactg
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Engineering expression for critical point
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https://www.youtube.com/watch?v=DYCwLAtNsjQ
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Tone communicates how an author feels about their topic. How do good readers pick up on tone from clues left by the words an author chooses? Let’s discuss, and find out together!
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
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attributions and pictures of sausages:
Half smokes and Ben’s [Chili Bowl]* is licensed under an attribution/sharealike license through the Wikimedia Commons; it’s from user Joe Loong: https://www.flickr.com/photos/joelogon/3302309261/
Chicago-style hot dog courtesy of Jonathan Mauer, licensed under a CC Attribution/Sharealike 4.0 license: https://en.wikipedia.org/wiki/File:Chicago-style_hot_dog_Johnniebeefs.jpg
Classic New York Hot Dog from Gray’s Papaya licensed under a CC attribution/sharealike license from Aneil Hutchman of http://cestlavibe.com/: https://www.flickr.com/photos/72547033@N06/14487377758
* Ben’s Chili Bowl is an indispensable DC food landmark. The one in the airport is no substitute; go to the one on U Street.
Music:
Bach - Brandenburg Concerto No 3, 1 allegro by Advent Chamber Orchestra is licensed under a Attribution-Share Alike 3.0 United States License.
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https://www.youtube.com/watch?v=l3yWmXbC36s
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Subtracting Mixed Numbers Word Problem
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-number-add-sub-pre-alg/e/adding_subtracting_mixed_numbers_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-number-add-sub-pre-alg/v/adding-subtracting-mixed-numbers-0-5-ex-1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Missed the previous lesson?
https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-number-add-sub-pre-alg/v/subtracting-mixed-numbers-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!
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https://www.youtube.com/watch?v=tj9oLZYA-AQ
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Teachers - tune in to Wednesday's Daily Homeroom live stream with Sal at noon PT. We'll have Khan Academy's professional learning lead Meaghan Pattani on the show to answer your questions.
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https://www.youtube.com/watch?v=QRFmMtXO7hY
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Upper Bound on Forward Settlement Price. Created by Sal Khan.
Watch the next lesson:
https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/forward-futures-contracts/v/lower-bound-on-forward-settlement-price?utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets
Missed the previous lesson? Watch here:
https://www.khanacademy.org/economics-finance-domain/core-finance/derivative-securities/forward-futures-contracts/v/contango-and-backwardation-review?utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets
Finance and capital markets on Khan Academy: In many commodities markets, it is very helpful for buyers or sellers to lock-in future prices. This is what both forwards and futures allow for. This tutorial explains how they work and what the difference is between the two.
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https://www.youtube.com/watch?v=FcRxdq7KGOQ
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Solving equations of the form AX+B=C
Watch the next lesson: https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/old-school-equations/v/algebra-linear-equations-3?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI
Missed the previous lesson?
https://www.khanacademy.org/math/algebra/solving-linear-equations-and-inequalities/old-school-equations/v/algebra-linear-equations-1?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI
Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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https://www.youtube.com/watch?v=DopnmxeMt-s
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Solutions to Three Variable System
Watch the next lesson: https://www.khanacademy.org/math/algebra2/systems_eq_ineq/fancier_systems_precalc/v/solutions-to-three-variable-system-2?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII
Missed the previous lesson?
https://www.khanacademy.org/math/algebra2/systems_eq_ineq/fancier_systems_precalc/v/systems-of-three-variables-2?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII
Algebra II on Khan Academy: Your studies in algebra 1 have built a solid foundation from which you can explore linear equations, inequalities, and functions. In algebra 2 we build upon that foundation and not only extend our knowledge of algebra 1, but slowly become capable of tackling the BIG questions of the universe. We'll again touch on systems of equations, inequalities, and functions...but we'll also address exponential and logarithmic functions, logarithms, imaginary and complex numbers, conic sections, and matrices. Don't let these big words intimidate you. We're on this journey with you!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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https://www.youtube.com/watch?v=K38zMmtjxEw
Note: All Khan Academy content is available for free at (www.khanacademy.org)
There are no easy answers when it comes to the question of how and when to safely reopen schools. Friday at noon PT, Dr. Anthony Fauci joins Sal to share summer pandemic guidance and discuss school reopening.
For more information visit: keeplearning.khanacademy.org
Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. If you’d like to contribute, please visit:
https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=live&utm_campaign=schoolclosers
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https://www.youtube.com/watch?v=asVN55SS9T0
Note: All Khan Academy content is available for free at (www.khanacademy.org)