Ratios and Graphs Videos - Free Educational Videos for Students in K - 12

Array

Lumos Video Store

This page provides a list of educational videos related to Ratios and Graphs. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Ratios and Graphs.


Dividing line segments


By Khan Academy

Watch Sal figure out the coordinates of a point between two other points that give a certain ratio. A graph is given to make it easier to visualize the problem.

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.

Example: The six trig ratios


By Khan Academy

Worked example where we walk through finding the major trig ratios

Trig Ratios - Part 2


By Papapodcasts

This is a video lecture course on Basics of Trigonometry and Geometry.

Trigonometry - The Trig Ratios, sin x, cos xand tan x : ExamSolutions


By ExamSolutions

In this tutorial you are shown how the sin, cos and tan ratios compare two sides of a right angled triangle.. You need to know this before calculating lengths and angles of right angled triangles. To see this video and other go to ExamSolutions at http://www.examsolutions.co.uk/

Trig Ratios - Part 1


By Papapodcasts

This is a video lecture course on Basics of Trigonometry and Geometry..

Trig Ratios of Special Angles Part 2


By AlRichards314

Youtube Presents Trig Ratios of Special Angles Part 2 an educational video resources on english language arts.

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!

Rates and ratios


By MathPlanetVideos

Express the ratio as a fraction in simplest form and as a decimal

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.

Match graphs of rational functions to their formula


By Khan Academy

Sal matches three graphs of rational functions to three formulas of such functions by considering asymptotes and intercepts.

Using trigonomteric ratios - SOH CAH TOA


By Mr Jamieson Maths

In this 'in classroom' video, you will see examples of how to use three trigonometric ratios, sin cos and tan, to solve for sides and angles in right triangles.

Trig Ratios - Part 3


By Papapodcasts

This is a video lecture course on Basics of Trigonometry and Geometry.........

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

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.

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.

Using Tables to Explore Ratios and Rates


By TeacherTube Math

YouTube presents 64 Using Tables to Explore Ratios and Rates an educational video resource on math.

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.

Equivalent ratios


By Duane Habecker

Youtube Presents Equivalent ratios an educational video resources on english language arts.