Math
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Civil Service Examination Reviewer Playlist:
Solving Age Problems PART 1 - Civil Service Exam
https://youtu.be/FZmZUaet3Ig
How to Solve Age Problems (Part 2) - Civil Service Exam - LET Exam
https://youtu.be/738Xx0qfX2E
Number Series - Math Reviewer - Civil Service Exam and LET
https://youtu.be/TfvN_NSbfdk
Order of Operations - PEMDAS - Civil Service Exam & LET Reviewer
https://youtu.be/pfnctEEWuuM
How to Solve Word Problems in Ratio and Proportion
https://www.youtube.com/watch?v=TrunSSuYrAg
How to Solve Number Problems? | Civil Service Exam - LET
https://youtu.be/95dGkfHGWT0
Percentage Hacks! How to Get the Percentage of a Number?
https://youtu.be/h8yfFXq-pCI
How to Solve for SPEED DISTANCE & TIME | Civil Service Examination - LET Review
https://youtu.be/vEEDLQm2zoU
Solving Word Problems SPEED, DISTANCE and TIME | LET and Civil Service Exam Reviewer
https://youtu.be/loO2FbbQrPk
How to Solve the Probability of Simple Events
https://youtu.be/vLx--q-cdyo
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Intro: 0:00
Example 1: 0:58
Example 2 ( Practice ): 3:10
This are two examples on how to solve simple system of equation problems using the substitution method. When solving systems, you are finding a value for all your unknown variables (usually solving for x and y ). If you need more examples, go to my other systems of equations lesson using substitution.
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A great introduction to adding and subtracting numbers! This addition and subtraction for kids lesson teaches math operations and simple equations in a fun and entertaining way with donuts and sloths! Perfect for laughing and learning inside or outside the classroom, this video covers math operations vocabulary, opposite operations math, and adding zero to a number. Adding and subtracting two digit numbers has never been so fun!
00:00 - Introduction
00:51 - Introducing Adding & Subtracting
01:53 - Introducing Written Numerals & Operation Signs
02:47 - Simple Equation Example # 1
03:31 - Simple Equation Example # 2
04:51 - Introducing Opposite Operations Math
05:54 - Simple Equation Example # 3 | Adding Zero to a Number
07:04 - Outro
Mini Math Movies is a new mathematics educational series from Scratch Garden full of in depth math lessons for kids! Check out the full playlist here: https://tinyurl.com/minimathmovies
Scratch Garden makes entertaining educational videos for people that like to laugh and learn! Please Subscribe to see more great fun learning videos from Scratch Garden! https://goo.gl/1biPjA
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#minimathmovies #addingandsubtracting #mathlessonsforkids
In this video, we will learn about the simultaneous linear equation.
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Intro: 0:08
Example 1: 0:55
Example 2: 3:25
This is a video on solving systems of equations by substitution. There are many ways to solve these types of equations and this is just one method. Follow the steps below if you are stuck and feel free to pause the video as you learn if I am going too fast.
Steps to solve
1. Identify the "easier" equation
2. Solve for a variable
3. Substitute your answer into the other equation
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Linear versus Nonlinear Differential Equations
Example 1: 0:00
Example 2: 2:59
Example 2 Answers: 3:32
Two examples on how to solve simple system of equation problems using the substitution method. When solving systems, you are finding a value for all your unknown variables (usually solving for x and y ). If you need more examples, go to my other systems of equations lesson using substitution.
Follow me on Twitter: http://twitter.com/mathodman20
Follow me on Facebook: http://www.facebook.com/pages/Mathodm...
Welcome to All About Ratios with Mr. J! Need help with ratios? You're in the right place!
Whether you're just starting out, or need a quick refresher, this is the video for you if you're wondering, "What are Ratios?". Mr. J will go through ratio examples and explain how to find ratios.
Maybe you're looking for how to teach ratios. This video will help you as well.
Here is a link to a video on how to read a line plot with fractions (interpreting line plots):
https://youtu.be/0wn34s6tNWw
About Math with Mr. J: This channel offers instructional videos that are directly aligned with math standards. Teachers, parents/guardians, and students from around the world have used this channel to help with math content in many different ways. All material is absolutely free.
Click Here to Subscribe to the Greatest Math Channel On Earth: https://goo.gl/XHTrfY
Follow Mr. J on Twitter: @MrJMath5
Email: math5.mrj@gmail.com
Music: https://www.bensound.com/royalty-free-music
Hopefully this video is what you're looking for when it comes to ratios.
Have a great rest of your day and thanks again for watching!
This is a short clip that shows the first part of a video that teaches how to subtract with regrouping. The full video is on our youtube channel now. Subscribe and check it out. This was meant for 2nd graders but can be used by any child at that stage of learning. Subtraction can be hard to learn which is why we made this video to help kids in this process.
Check out the new math game we made at https://www.MageMath.com/
It is a full video game called Mage Math that helps kids build confidence in math while having tons of fun.
Kids will learn to take from the next place value to be able to subtract. They learn in a fun way with 3d animated objects.
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Our math and learning videos are designed to help with the education of children in this important growing phase. The videos teach math and other subjects that help children in their education. We make videos for toddlers, preschool, kindergarten, 1st grade, 2nd grade, 3rd grade and even a few for 4th grade. It is our goal to help kids achieve their potential by giving them a head start in math and other areas of education.
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Westerville South High School, Westerville, Ohio
(Parody of Yeah! by Usher)
(Intro: D Schizzo)
Dub South
Wildcat Pride
Yeah! Okay! (Murphy, Murphy, Murphy)
Let's Go!
Graph! Graph! Graph! Graph! Graph...Graph!
Graph! Graph! Graph! Graph! Graph...Graph!
(Verse 1: Dr. Murph)
In the class with his homies,
Try'na to get 'y' to equal...equal... m x + b (plus b)
To make graphing easy
I was the teacher checking on him
From the stuff he was saying about math, I knew that he got me (got me)
This boy was a G
My lesson got heavy, I had a girl who's screaming she didn't know.
She's sayin' come help me,
So I got her up and brought her up to the board, said I'll let you know
Then I told her I said...
(Chorus: Dr. Murph)
Graph! Get 'y' alone, you know that's step one!
Graph! Startin' on 'b', we about to have fun
Graph! Now we use that slope, we 'bout to be done
Graph! Plot a few more points, draw that line and then you...
Graph! Graph! Graph! Graph! Graph...Graph!
Graph! Graph! Graph! Graph! Graph...Graph!
(Verse 2: Dr. Murph)
She's mixed up in her head now, says she can't remember what to do after she plots point B, ย
I said watch and you'll see, (watch and you'll see now)
Now I gotta keep it real now, just use rise over run after starting on point B, it's that easy
Now if you rise up, it's positive, and if you fall, it's negative
and if you run right, it's positive, and left is negative
She said 'I get it now!'
And I'm like 'Yeah, now graph that line for me.'
She said, 'Gimme the test' and I'm
Like 'Yeah, who ever thought it could be this easy?'
And I said...
(Chorus: Dr. Murph)
Graph! Get 'y' alone, you know that's step one!
Graph! Startin' on 'b', we about to have fun
Graph! Now we use that slope, we 'bout to be done
Graph! Plot a few more points, draw that line and then you...
Graph! Graph! Graph! Graph! Graph...Graph!
Graph! Graph! Graph! Graph! Graph...Graph!
(D Schizzo)
Hey! Hey! Winna!
(Verse 3: Mr. Winner)
Watch out! This lessons ridiculous, when we're graphing lines we're so meticulous
And wow! These kids, they all know how, they graph all them lines, then they take a bow
Forget about them curves with them hills and dips, I teach about linear relationships
So gimmie the students and I'll open their minds, what are we doing today? We're graphing some lines!
They say, 'Winna man, this line look great?' I said 'You bet, look at all them points go straight!'
How you like me now, when my class is graphing lines without assistance
Just think, pass the test with ease, Winna teach you how to get them A's and B's
Me and Murph likes lines when they're stuck in the plane, we'll rap all these rules, 'til they're stuck in your brain!
(Chorus: Dr. Murph)
Graph! Get 'y' alone, you know that's step one!
Graph! Startin' on 'b', we about to have fun
Graph! Now we use that slope, we 'bout to be done
Graph! Plot a few more points, draw that line and then you...
Graph! Graph! Graph! Graph! Graph...Graph!
Graph! Graph! Graph! Graph! Graph...Graph!
(Outro: Mr. Winner)
Take that, rewind it back, D Schizzo got the rhythm, make the class go...
Take that, rewind it back, Dr. Murph got the voice to make the class go...
Take that, rewind it back, Mr. Winna got the flow to make the class go...
Take that, rewind it back, D Schizzo got the rhythm, make the class go...
(Outro - D Schizzo)
I get the y alone (x2)
I do the intercept (x4)
Now the slope, hey (x4)
Draw the line (x4)
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Check out the NEW Math Game we made at https://www.MageMath.com/
It is a full video game called Mage Math that helps kids build confidence in math while having tons of fun.
Come learn all about Multiplication with the Number One in this fun Video. Kids will learn not only how to multiply numbers but also learn about groups and numbers within groups.
Students should learn how multiplication works and be able to use images to multiply numbers. Math education is important especially with STEM being used in so many schools. The M on the end stands for Math so let's have some fun learning! Online education is great for helping with common core math and mathematics in general.
Check out our Distributive Property of Multiplication Video here https://youtu.be/APWCe2KtpjQ
Visit our website for ad free videos and math games.
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Courses on Khan Academy are always 100% free. Start practicingโand saving your progressโnow: https://www.khanacademy.org/ma....th/geometry/hs-geo-a
Midpoint Formula
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/geometry/analytic-geometry-topic/cc-distances-between-points/e/midpoint_formula?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry
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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.
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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Center Grove Elementary School 5th Grade teacher Natalie Freeman shares math formulas and conversions students need to know for standardized tests. See more lessons at www.centergrove.k12.in.us/LearnCG.
No one on Earth knows how to reverse one of the most popular computer algorithms. Yet it's really easy to compute one-way. You could make billions of dollars if you solved this mathematics problem, which is computed quintillions of times per second in the race for mining Bitcoin. SHA256 has some amazing properties, is useful for digital signatures, cryptography, authentication, and is a central part of the Bitcoin protocol.
(**** UPDATE 2021: After two years, I've finally posted a follow-up video, an introduction to Bitcoin. You can find it here: https://youtu.be/LzhJjSRad5A )
Bitcoin and other "crypto-currencies" rely on one-way hash functions like the SHA-256 algorithm to secure the blockchain where all the transactions are kept.
In this video, I explain some of the big-picture ideas behind this one function. Other cryptocurrencies use similar ideas.
Comments, suggestions, or errors? Let me know in the comments, and I'll fix them in an upcoming follow-up video.
Take a look at some of my other videos: https://www.youtube.com/playli....st?list=PL625C69DF58
---- Links ------
Wikipedia about SHA-256:
https://en.wikipedia.org/wiki/SHA-2
Current Bitcoin difficulty:
https://www.coinwarz.com/diffi....culty-charts/bitcoin
Big number calculator:
https://defuse.ca/big-number-calculator.htm
---- Credits ----
BitCoin & Money Photo:
Copy Link to Credit: (CC-BY 4.0) Cryprocurrency360.com
https://www.flickr.com/photos/....bitcoin-crypto/41063
Bitcoin mining farm:
(CC-BY 2.0) Marko Ahtisaari - https://www.flickr.com/photos/moia/
Fourier Transform Graph:
(CC-BY 4.0) Jake
http://pgfplots.net/tikz/examples/author/jake/
Wikipedia Hash Function Algorithm illustrations:
https://en.wikipedia.org/wiki/SHA-2
(CC-BY-SA)
Welcome to Order of Operations with Parentheses and Exponents with Mr. J! Need help with the order of operations (PEMDAS)? You're in the right place!
Whether you're just starting out, or need a quick refresher, this is the video for you if you're looking for help with the order of operations. Mr. J will go through two examples and explain how to work through order of operation problems involving parentheses and exponents.
โ
More Order of Operations Videos:
- Why Do We Use the Order of Operations in Math? = https://youtu.be/TPA2PMM97MQ
- Order of Operations: A Step-By-Step Guide = https://youtu.be/x41BCrYh8Kc
- Order of Operations with Parentheses and Exponents = https://youtu.be/dzwDTEej8MU
- Order of Operations (No Parentheses or Exponents) = https://youtu.be/BCg1nz5k0HY
- Order of Operations with a Fraction Bar = https://youtu.be/hfVKWJxGYE8
- Order of Operations with a Fraction Bar (Answer is a Fraction) = https://youtu.be/Q5Ch7_By9LI
- Order of Operations with Parentheses, Exponents, and a Fraction Bar = https://youtu.be/JGLQkPL1kxw
- Order of Operations with Integers | Positives and Negatives = https://youtu.be/AtPS0pWthEo
- Order of Operations with Parentheses, Brackets, and Braces = https://youtu.be/u7Lack4Tmx8
About Math with Mr. J: This channel offers instructional videos that are directly aligned with math standards. Teachers, parents/guardians, and students from around the world have used this channel to help with math content in many different ways. All material is absolutely free. #MathWithMrJ
Click Here to Subscribe to the Greatest Math Channel On Earth: https://goo.gl/XHTrfY
Follow Mr. J on Twitter: @MrJMath5
Email: math5.mrj@gmail.com
Music: https://www.bensound.com/royalty-free-music
Hopefully this video is what you're looking for when it comes to the order of operations.
Have a great rest of your day and thanks again for watching! โ๏ธโ๏ธโ๏ธ
โ
Thanks to Aloud, this video has been dubbed into Spanish and Portuguese. #DubbedWithAloud
English
This video has been dubbed into Spanish (United States) and Portuguese (Brazil) using an artificial voice via https://aloud.area120.google.com to increase accessibility. You can change the audio track language in the Settings menu.
Spanish
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Portuguese
Este vรญdeo foi dublado para o portuguรชs usando uma voz artificial via https://aloud.area120.google.com para melhorar sua acessibilidade. Vocรช pode alterar o idioma do รกudio no menu Configuraรงรตes.
Aligned with Common Core State Standards - Math
Operations & Algebraic Thinking
1.OA.D.7: Work with addition and subtraction equations. Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.
