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Curated Video
Proportionality
What is proportionality? How does it relate to pattern? Learn the answers to these questions and explore the basics of proportional relationships in this video.
Curated Video
Proportional Relationships in a Table (Part 1)
Determine if ratios in a table are proportional by testing for equivalent ratios.
Curated Video
Graphing Proportional Relationships Using a Table
This video explains how to graph a proportional relationship using a table. Understand the concept of proportions and learn how to plot points on a coordinate plane. The lesson also includes a real-life example of calculating earnings...
Curated Video
Graphing Proportional Relationships
This video explains how to display all the possibilities in a proportional relationship by graphing. Use examples of pounds and cost to demonstrate how to plot points on a coordinate plane and show that any ordered pair on the line...
Curated Video
Proportional Relationships in a Graph
Identify the graph of a proportional relationship.
Curated Video
Finding Unit Rates from a Graph of a Proportional Relationship
This video lesson will provide instruction for students to learn how to find a rate from the graph of a proportional relationship. Students will be instructed how to interpret a point on a graph and use this to find the unit rate. We...
msvgo
Direct Proportion
It explains the concept of direct proportion by using real-world examples. It also provides a few word problems on direct proportion and their solutions.
Curated Video
Identify Proportional Relationships by Examining the Origin
In this video, students learn how to identify a proportional relationship by understanding the meaning of the origin on a graph. The video explains that a proportional relationship is characterized by a straight line on the graph and a...
Curated Video
Finding Unit Rates from Graphs
This video explains how to find the unit rate from a graph showing the relationship between time and distance. Examine three methods to determine the unit rate, emphasizing the importance of correctly identifying the dependent and...
Curated Video
Determining the Constant of Proportionality from a Graph
This video explains how to determine the constant of proportionality from a graph. It demonstrates the process using an example of time and distance. The constant of proportionality can be found by finding the ratio of y to x, and it...
Curated Video
Comparing Proportional Relationships by Unit Rates
In this lesson, students will learn how to compare prices represented in different ways and how to determine the better buy using unit rates. They will also learn how to compare the speeds of two trains by comparing their unit rates. By...
Curated Video
Finding Fractional Unit Rates Using a Graph
In this video, students learn how to find a fractional unit rate by using a graph. The teacher explains that unit rates can be expressed as fractions instead of decimals, and provides examples of how to calculate unit rates from graphs....
Curated Video
Quantifying Proportional Relationships Using Graphs
Learn how to quantify and describe the relationship between two proportional measures using graphs. The teacher reviews concepts such as quantities, coordinates, proportional versus non-proportional relationships, and the importance of...
Curated Video
Understanding Proportional Relationships: Relating Graphs and Equations
This video explains how to understand proportional relationships by relating graphs and equations. Learn about the process of writing equations for proportional relationships, identifying the independent and dependent variables, and...
Curated Video
Identifying Proportional Relationships Through Graph Analysis
In this lesson, students will learn how to identify a proportional relationship by analyzing a graph. They will understand that a proportional relationship exists when an input is multiplied by a constant to create an output. They will...
Curated Video
Describe the Relationship Between Two Measures by Examining the Graph of a Line
This video explains how to describe the relationship between two measures by examining the graph of a line. They discuss the independent and dependent variables, as well as proportional and non-proportional relationships. Through...
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...
Khan Academy
Khan Academy: Algebra: Direct Variation Models
This video demonstrates how to create a direct variation model, or a linear equation, given a word problem that deals with rate of change. It also shows how to solve the equation and graph the direct variation model. Practice problems...
Khan Academy
Khan Academy: Algebra: Proportionality Constant for Direct Variation
This video demonstrates how to set up an equation for direct variation and solve for the variable "k" which represents the constant of proportionality. [1:44]
Khan Academy
Khan Academy: Algebra: Direct Variation Application
This video demonstrates how to solve a word problem involving a direct variation. It shows how to set up a linear equation for a directly proportional relationship and solve for the constant of proportionality. [2:02]
Math Mammoth
Math Mammoth: How to Solve Basic Percent Word Problems, Part 2
This video demonstrates how to find a percentage of an area by beginning with fractional parts. [4:55]
Math Mammoth
Math Mammoth: Proportion Word Problems: Pre Algebra Lesson
Demonstrates how to solve three word problems using ratios and proportions. [5:55]
Imagine Learning Classroom
Learn Zillion: Convert Between Currencies and Find Exchange Rate
In this lesson, you will learn how to convert between two different currencies and find the exchange rate by solving proportions. [3:47]
Imagine Learning Classroom
Learn Zillion: Identify the Constant of Proportionality From a Diagram
In this lesson, you will learn how to identify the constant of proportionality from a labeled diagram by writing an equation of the form y=mx and solving for m. [3:56]