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
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...
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,...
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 Find Missing Measurements of Similar Figures Using a Proportion?
Two similar triangles have the same angles, but their legs have different lengths. This means their angles are congruent, and thusly, their corresponding sides are congruent. So there is a missing measurement that needs to be found. Set...
Curated OER
Three Ways to Solve a Proportion
The demonstration doesn't necessarily show how to solve a proportion, rather it shows how to determine if two given ratios are equal in proportion.
Curated OER
Proportions and Similar Figures
Duane demonstrates how to find a missing length in figures that are similar. In this example he uses two similar triangles.
Curated OER
Finding the Whole from a Percent
He draws, problem solves, and uses proportions to show how to determine how to find a whole from a percent. Good problem solving strategies are at work in this video on percent. This is a good video for learners with a basic...
Government of Alberta
Learn alberta.ca: Math Interactives: Rate/ratio/proportion (Video Interactive)
The use of rate, ratio, and proportion is illustrated in this video about action photography. An additional interactive element allows students to explore equivalent ratios equivalencies through enlarging and reducing images to compare...
PBS
Pbs Learning Media: Real Life Math: Woodworker
Listen to a master craftsman explain many of the ways that mathematics is used in woodworking, including number operations; geometry; ratios and proportions; and measurement. In the accompanying activity, students will draw a scale...
Math TV
Math tv.com: Basic Mathematics: Solving Proportions
A math teacher and several students offer step-by-step solutions to questions involving proportions. Questions include, "In the proportion 3/4 = 6/8, name the four terms, the means, and the extremes" and "Solve for x: 2/3 = 4/x". In the...
Math TV
Math tv.com: Basic Mathematics: Solving Proportions: Applications
A math teacher and his students provide step-by-step solutions to word problems dealing with proportions. Example questions include, "A recipe for 16 brownies calls for 2/3 cup of butter. How many brownies can be made from 1 cup of...
Sophia Learning
Sophia: Representing Fractions: Lesson 7
The purpose of this lesson is to demonstrate how to represent a fraction. It is 7 of 15 in the series titled "Representing Fractions."