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This page provides a list of educational videos related to Ratios and Proportions. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Ratios and Proportions.
Testing if Ratios are Proportional
By Khan Academy
Watch this video to learn a method to test if two (or more) ratios are equal. Equal ratios are called proportional. If the ratios can be reduced the same fraction in lowest terms then they are proportional.
Fractions & Proportions : Understanding Math Ratios
By eHow
YouTube presents Fractions & Proportions : Understanding Math Ratios an educational video resources on math.
How to use Ratios and Proportions to Solve Real World Problems
By mrtedmartin
Instructor uses a Power Point presentation to demonstrate how to use ratios and proportions to solve problems real world problems. Unit rates are discussed and definitions are given. Solving unit rate problems are modeled and a calculator is used for computation.
Speed translation | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy
By Khan Academy
This video takes us through some more advanced unit conversion problems. Here, we can see how to make multiple conversions in the same problem concerning speed. Take particular note of how the units change in each step. More importantly, note how, step by step, our units slowly change into the units we want for our final answer. If you are having trouble understanding why this happens, go to the key concept described at 2:20 in the video. Note that this only occurs when multiplying two quantities, not when adding them!
Fractions & Proportions : Understanding Math Ratios
By
In math, ratio is a fraction in which two variables can compared. Discover how to convert ratios into fractions with help from a math teacher in this free vi...
Finding average speed or rate | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy
By Khan Academy
Using the formula for finding distance we can determine Usian Bolt's average speed, or rate, when he broke the world record in 2009 in the 100m. Watch.
Right Ratio Of Rest (Pt 3): Rational Numbers
By NASAconnect
In the third segment of the Right Ratio of Rest: Proportional Reasoning Jennifer Pulley explains three types of rational numbers: Fractions Decimals and Percents.
1.8 - Finding the inverse of a rational function with a root as a denominator - coolmath
By Mr. McLogan's Math Channel
In this video tutorial I will show you how to find the inverse of a function f(x). I do this by first writing the equation substituting y for f(x). I then solve the equation for x. The result is the inverse. The inverse can be written, substituting y back in for x, and x for y. I also show how to verify that a function is an inverse of another function. I am a math teacher that provides free online math tutoring by working through problems for the website www.freemathvideos.com These questions are usually to help students understand their math homework or to do well on their math test. The videos are made for students that want help with math and want to be shown a step by step process into solving the problems. In addition to solving the problems I also offer explanations into why I am doing each step. I offer free math videos so that my students can learn math online if they missed a day of school. However I also like to answer questions that are no
Identifying proportional relationships
By Khan Academy
Given a table of ratios, watch as we test them for equivalence and determine whether the relationship is proportional.
Writing proportions
By Khan Academy
Some examples of writing two ratios and setting them equal to each other to solve proportion word problems
Solve Problems Involving Rates and Ratios
By Khan Academy
Watch this video as the instructor clearly explains how to solve a word problem involving finding unit rates. When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. See how you can apply this process to help you solve similar problems.
Limits 1d - Polynomial and Rational Functions
By MathDoctorBob
Calculus: We approach limits from a more abstract perspective. Using the limits for constants and f(x) = x, we build up the evaluation rule for polynomial and rational functions. General rules for limits algebra are given.
WRITING STYLE 12: Punctuation Frustration 2
By demarcations
This video reviews the uses of the semicolon, colon, and dash with clauses and phrases. A teacher is presenting the material to students, and at the end a class assignment appears onscreen.
What you might not know about the Declaration of Independence - Kenneth C. Davis
By TED-Ed
This video tells interesting historical details of the events from July 2nd to July 4th 1776. It shows how Thomas Jefferson and others were involved in composing, writing, and revision the document of the Declaration of Independence
WRITING STYLE 11: Punctuation Frustration 1
By demarcations
This video reviews eight primary uses of the comma with phrases, clauses, series, and quotations. It explains standard punctuation with commas in many annotated, detailed examples.
Declaration of Independence Song
By TheGrammarheads
Entertaining and educational song about the Declaration of Independence.
I can introduce my topic and group related information, including illustrations
By 3rd GradeELA team
introducing topics
Identifying Rational Zeros
By ProfKeester
This video will explain how to use the Rational Zeros Theorem to find the zeros of a polynomial.