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=N4kDzoQOngY Note: All Khan Academy content is available for free at (www.khanacademy.org)
Examples showing how to check whether or not the conditions have been met for doing a z test about a proportion.
View more lessons or practice this subject at http://www.khanacademy.org/math/ap-statistics/tests-significance-ap/one-sample-z-test-proportion/v/conditions-for-a-z-test-about-a-proportion?utm_source=youtube&utm_medium=desc&utm_campaign=apstatistics
AP Statistics on Khan Academy: Meet one of our writers for AP¨_ Statistics, Jeff. A former high school teacher for 10 years in Kalamazoo, Michigan, Jeff taught Algebra 1, Geometry, Algebra 2, Introductory Statistics, and AP¨_ Statistics. Today he's hard at work creating new exercises and articles for AP¨_ Statistics.
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https://www.youtube.com/watch?v=5JlJ4Qfk8g4
Note: All Khan Academy content is available for free at (www.khanacademy.org)
It is the not-too-distant dystopian future. You live in the cyberpunk underbelly of Metropoluxe with your canine companion-bot GoodBoy3000.
Focus virtue: GRIT in the face of repeated failure
Written by Diana Rosile and Alyssa Foote
Performed by Ken Jones
Sound designed by David Rheinstrom
Illustrated by Alyssa Foote
Khaffeine is a Social and Emotional Learning-focused audio journey that revitalizes and excites learners who are looking for a sense of inspiration despite their daily challenges.
Khaffeine perks you up and gets you going! It encourages the listener to believe in themselves, even—especially!—when circumstances are hardest.
Sfx Attributions:
“Neighborhood compost and moving trucks ambience” by Ev-Dawg, licensed under an Attribution License
https://freesound.org/people/Ev-Dawg/sounds/350695/
“Slowblip” by CosmicD, licensed under an Attribution License
https://freesound.org/people/CosmicD/sounds/37574/
“Machinery_hum” by Primeval_Polypod, licensed under an Attribution License
https://freesound.org/people/primeval_polypod/sounds/156505/
Music:
“This Bright Day” by Ketsa, licensed under an Attribution-NonCommercial-NoDerivatives 4.0 International License
https://freemusicarchive.org/music/Ketsa/End_is_Beginning/This_Bright_Day
“Epic cinematic” by Scott Holmes, licensed under an Attribution-NonCommercial license
https://freemusicarchive.org/music/Scott_Holmes/Cinematic_Background_Music
“Street Dancing” by Timecrawler 82, licensed under an Attribution License
https://freemusicarchive.org/music/Timecrawler_82/Osaka_Lights/Street_Dancing
“Epic Heroic Orchestral Dramatic” by SoundFlakes, licensed under an Attribution license
https://freesound.org/people/SoundFlakes/sounds/423499/
“A Scent of Mysteries” by X3nus, licensed under an Attribution license
https://freesound.org/people/X3nus/sounds/509680/
Other sound effects and music licensed under a Creative Commons 0 license, or original to KA staff (e.g., the GoodBoy sounds are all ours!)
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https://www.youtube.com/watch?v=tD1e_BaOA4U
Note: All Khan Academy content is available for free at (www.khanacademy.org)
More free lessons at: http://www.khanacademy.org/video?v=pMZSDCm9tko
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https://www.youtube.com/watch?v=pMZSDCm9tko
Note: All Khan Academy content is available for free at (www.khanacademy.org)
How do you know when to use "less" or "fewer" when describing the quantity or amount of things?
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https://www.youtube.com/watch?v=ZkFihBrRMCM
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/cc-sixth-grade-math/cc-6th-negative-number-topic/cc-6th-number-opposites/e/number-opposites?utm_source=YT&utm_medium=Desc&utm_campaign=6thgrade
Watch the next lesson: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-negative-number-topic/cc-6th-number-opposites/v/negative-symbol-as-opposite?utm_source=YT&utm_medium=Desc&utm_campaign=6thgrade
Missed the previous lesson? https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-negative-number-topic/cc-6th-neg-dec-frac-number-line/v/number-line-3-exercise-example?utm_source=YT&utm_medium=Desc&utm_campaign=6thgrade
Grade 6th on Khan Academy: By the 6th grade, you're becoming a sophisticated mathemagician. You'll be able to add, subtract, multiply, and divide any non-negative numbers (including decimals and fractions) that any grumpy ogre throws at you. Mind-blowing ideas like exponents (you saw these briefly in the 5th grade), ratios, percents, negative numbers, and variable expressions will start being in your comfort zone. Most importantly, the algebraic side of mathematics is a whole new kind of fun! And if that is not enough, we are going to continue with our understanding of ideas like the coordinate plane (from 5th grade) and area while beginning to derive meaning from data! (Content was selected for this grade level based on a typical curriculum in the United States.)
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=2Zk6u7Uk5ow
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Multiply and Simply a Radical Expression
Watch the next lesson: https://www.khanacademy.org/math/algebra/exponent-equations/simplifying-radical-expressions/v/simplifying-square-roots?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI
Missed the previous lesson?
https://www.khanacademy.org/math/algebra/exponent-equations/simplifying-radical-expressions/v/radical-equivalent-to-rational-exponents-2?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=GEeKOeGHddY
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/measurement/rectangle-area-perimeter-word-pr/v/comparing-area?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Missed the previous lesson? https://www.khanacademy.org/math/pre-algebra/measurement/rectangle-area-perimeter-word-pr/v/length-and-width-from-perimeter-and-area?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!
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.
For free. For everyone. Forever. #YouCanLearnAnything
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https://www.youtube.com/watch?v=YM2G4ATOcpw
Note: All Khan Academy content is available for free at (www.khanacademy.org)
Here's a lcm (least common multiple) example exercise that's a little bit harder, but totally doable. Again, we'll use the prime factorization approach.
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/factors-multiples/least_common_multiple/e/least_common_multiple?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/factors-multiples/least_common_multiple/v/least-common-multiple-lcm?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Missed the previous lesson?
https://www.khanacademy.org/math/pre-algebra/factors-multiples/least_common_multiple/v/least-common-multiple-exercise?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!
...
https://www.youtube.com/watch?v=QUem_2dkB9I
Note: All Khan Academy content is available for free at (www.khanacademy.org)