Curated OER
How Do You Find the Constant of Variation from a Direct Variation Equation?
What is a constant variation? How can something change and be constant? Oh, the rate of change is constant. So if there are two variables that are directly proportional they can have a constant of variation? Yes! Still a bit confused?...
Curated OER
How Do You Solve a Word Problem Using a Percent Proportion?
Create a percent proportion using the given values in this word problem. Not sure how to set that up? Then watch this short video and see how the teacher sets up this percent proportion according to the given values.
Curated OER
Solving Word Problems with Percents
There are 20 kids on a bus, 60% of them have blue backpacks. How many is this? The teacher shows how to solve a percentage word problem using proportion ratios.
Curated OER
Percent Tip
How much am I supposed to tip for this meal? Many have asked this question. The instructor uses a visual to first set up the known numbers and then writes the ratios to solve the problem.
Curated OER
Percent Tax
Learn how to set up a proportion to determine how much additional tax you have to pay for an item.
Curated OER
Percent Discount
The concept of percent discount is very clearly explained in this informative tutorial. Learners will work through a real life discount problem using algebraic reasoning and a clearly outlined procedure. This is a good video.
Curated OER
How Do You Solve a Problem Using Indirect Measurement with Shadows?
Using indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...
Curated OER
How Do You Solve a Word Problem Using the Direct Variation Formula?
Have your class figure out how much "Teddy" weighs on the moon and how to translate words into algebra! This video shows pupils how to take a word problem, and then solve it using the direct variation formula and given information. Great...
Curated OER
How Do You Solve a Rational Equation by LCD Multiplication?
Use the least common denominator to solve rational equations with variables in the denominators of algebraic fractions. Learners can watch this video to find out how to do just this! An instructor solves 2 problems by finding the least...
Curated OER
How Do You Solve a Rational Equation by Adding Fractions?
A comprehensive video, this resource explains how to solve an equation when you have a variable in the denominator. The lecturer works through 2 different problems that represent 2 situations. From this video, pupils can gain knowledge...
Curated OER
How Do You Solve a Problem Using Indirect Measurement with Shadows?
Using indirect measurement, this video shows viewers how to find the height of a flagpole. The lecturer employs drawings as well as proportions to solve this problem, explaining each step. A useful resource to aid struggling learners and...
Curated OER
How Do You Determine If Two Ratios are Proportional by Reducing?
Working on proportional ratios in your class? This video might be for you! An instructor takes a step-by-step approach to reducing and comparing two ratios in order to determine if they are proportional. A clear video, this resource...
Curated OER
What is a Scale Drawing?
Scale drawings are an easy and plausible way to represent large things, such as roads and buildings, on paper. This tutorial explains what a scale drawing is and uses the example of a house to demonstrate how a scale drawing works. It...
Curated OER
How Do You Find the Scale of a Model?
A model car, a life size car, now compare their sizes. Hmmm. Ok, set up a proportion and then figure out a ratio, and now you can express the relationship in terms of scale. Watch this video and the teacher will demonstrate just how to...
Curated OER
How Do You Figure Out a Percent of Change?
First identify the parts of the word problem. Next identify the variable, decide what formula to use, figure out the quantities, insert the quantities into the equation, and now solve. There are many parts to solving this word problem so...
Math Playground
What is a Ratio?
Explore the concept of ratios with this film. Using pennies and nickels, an instructor shows how to describe a ratio. However, I think the use of money might be a bit confusing. Prior to showing this video, you may want to clarify that...
Math Playground
What are equal ratios?
Using a visual means, this video explores comparing ratios. This is a terrific way to approach the topic since it is a difficult concept for learners to understand. It is worth showing to the whole class, every mathematician can benefit...
FuseSchool
Solving Algebraic Fractions
Equations with algebraic fractions still require the LCD. Pupils learn to solve equations with algebraic fractions. Multiplying through by a common denominator gives a simpler equation that they can solve.
statisticsfun
Calculate A Sample Size of a Population Proportion
I think we need a new teacher; this one keeps asking us for the answers! The video walks through how to solve for sample size when you are given a z score, proportion, and margin of error. It also explains a graph of the relationship...
statisticsfun
How to Calculate Sample Size Proportions
Have you ever wondered about the proportion of ducks it would take to equal one bear's weight? (It's 423.) The video walks through how to solve for sample size when you already know the confidence, error, and proportion. It also graphs...
Curated OER
How Do You Figure Out Whether a Percent of Change is an Increase or a Decrease?
Another word problem to figure out. Well, first off you are trying to figure out the percent of something and this means your formula will be a proportional equivalent. Once you have the known terms in the correct places you can figure...
Curated OER
How Do You Solve a Word Problem Using Ratios?
The teacher demonstrates how to set up a word problem into a proportion. There are many ways to solve this equivalent ratios problem and the instructor chooses to find a multiplier to find the missing value.
Curated OER
How Do You Determine Whether Values in a Table are Proportional?
Here's a real-world problem to figure out. Are the gardens all similarly proportional in the number of vegetable plants to the number of flowers? The instructor sets up a table of the values of each garden. She then writes each set as a...
Curated OER
What's a Percent Proportion?
Here's a quick look at percentages as proportions. Percentages really are looking at numbers as a part of a whole, so it makes sense to look at it as a proportion. And how do you write proportion? You write proportions like a fraction,...