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MIDDLE SCHOOL

Mathematics (Grade 7)

Ratio and Proportional Relationships

Introduction to Ratios and Proportionality

Understanding Ratios
01:30
Understanding Ratios

Ratios describe the relationship between two quantities and help explain how they compare. They are used to represent proportional relationships and m

Video Duration: 1 minute and 30 seconds
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Understanding Proportions
01:29
Understanding Proportions

Proportions describe situations where two ratios are equal and show how quantities are related. They help explain how two quantities change together a

Video Duration: 1 minute and 29 seconds
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Identifying Proportional vs. Non-Proportional
01:28
Identifying Proportional vs. Non-Proportional

Not all relationships between quantities are proportional. Learning to identify whether a relationship is proportional or non-proportional helps expla

Video Duration: 1 minute and 28 seconds
Spotting Proportional Patterns
01:21
Spotting Proportional Patterns

Proportional patterns appear when two quantities change at a constant ratio. Recognizing these patterns helps identify proportional relationships and

Video Duration: 1 minute and 21 seconds
Understanding Multi-part Ratios
01:28
Understanding Multi-part Ratios

Ratios can compare more than just two quantities. Multi-part ratios are used to compare three or more quantities at the same time, helping describe mo

Video Duration: 1 minute and 28 seconds

Understanding Unit Rate

What is a unit rate?
01:19
What is a unit rate?

A unit rate compares a quantity to one unit of another quantity. It is used to describe how much of something occurs or is done per unit, making it ea

Video Duration: 1 minute and 19 seconds
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Unit Rates with Fractions (Fraction ÷ Whole)
01:05
Unit Rates with Fractions (Fraction ÷ Whole)

Unit rates involving fractions happen when a fractional amount is shared or compared per one unit. These situations are common in cooking, budgeting,

Video Duration: 1 minute and 5 seconds
Unit Rates with Fractions (Whole ÷ Fraction)
01:24
Unit Rates with Fractions (Whole ÷ Fraction)

Unit rates involving a whole number divided by a fraction appear in real-life situations where we want to know how many fractional parts fit into a wh

Video Duration: 1 minute and 24 seconds
Unit Rates with Fractions (Fraction ÷ Fraction)
01:29
Unit Rates with Fractions (Fraction ÷ Fraction)

Unit rates involving the division of one fraction by another happen in situations where both quantities are expressed as fractions. This type of rate

Video Duration: 1 minute and 29 seconds
Real-World Unit Rate Applications
01:17
Real-World Unit Rate Applications

Unit rates appear in many real-life situations where two quantities are compared to understand value, efficiency, or performance per single unit. From

Video Duration: 1 minute and 17 seconds
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Introduction to Proportional Relationships

What makes a relationship proportional?
01:26
What makes a relationship proportional?

Some relationships between quantities follow a predictable pattern, while others do not. Understanding what makes a relationship proportional helps fi

Video Duration: 1 minute and 26 seconds
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How to test proportionality
01:27
How to test proportionality

Not all relationships between quantities are proportional. Testing proportionality helps find out whether two quantities change together at a constant

Video Duration: 1 minute and 27 seconds
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Using Proportionality to Find Missing Values
01:19
Using Proportionality to Find Missing Values

Proportional relationships allow us to find unknown values when some information is given. Using proportionality, missing quantities can be determined

Video Duration: 1 minute and 19 seconds

Constant of Proportionality (k)

What is the Constant of Proportionality?
01:29
What is the Constant of Proportionality?

In a proportional relationship, two quantities change together in a predictable way. The constant of proportionality explains how one quantity is rela

Video Duration: 1 minute and 29 seconds
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Why k Remains Constant
01:17
Why k Remains Constant

In proportional relationships, quantities change together in a consistent way. The constant of proportionality, k, stays the same because the ratio be

Video Duration: 1 minute and 17 seconds
Connecting Unit Rate and k
01:21
Connecting Unit Rate and k

Unit rates are closely connected to the constant of proportionality, often represented by the symbol k. This connection helps explain how two quantiti

Video Duration: 1 minute and 21 seconds
Identifying k in tables
01:18
Identifying k in tables

In proportional relationships, the constant of proportionality, represented by the letter k, shows how two quantities are related. One effective way t

Video Duration: 1 minute and 18 seconds
Writing Equations from Tables
01:30
Writing Equations from Tables

Tables are a useful way to show how two quantities are related. When a relationship is proportional, the values in a table follow a constant pattern.

Video Duration: 1 minute and 30 seconds
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Recognizing Proportional Equations
01:30
Recognizing Proportional Equations

Equations can be used to describe relationships between quantities. Recognizing whether an equation represents a proportional relationship helps find

Video Duration: 1 minute and 30 seconds

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Real-World Proportional Situations

Speed and Distance Problems
01:23
Speed and Distance Problems

Speed and distance problems involve relationships between how fast something moves and how far it travels. These relationships often follow proportion

Video Duration: 1 minute and 23 seconds
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Using Proportions in Recipes
01:15
Using Proportions in Recipes

Recipes rely on proportional relationships to maintain taste and texture. Using proportions allows ingredient amounts to be adjusted while keeping the

Video Duration: 1 minute and 15 seconds
Density and Measurement Situations
01:27
Density and Measurement Situations

Density and measurement situations compare how one quantity relates to another using ratios and rates. These relationships help describe how much of s

Video Duration: 1 minute and 27 seconds
Introduction to Multi-Step Ratio Problems
01:12
Introduction to Multi-Step Ratio Problems

Some ratio problems require more than one step to solve. Multi-step ratio problems involve using proportional reasoning, unit rates, and logical steps

Video Duration: 1 minute and 12 seconds
Solving Multi-Step Proportional Problems
01:28
Solving Multi-Step Proportional Problems

Some proportional relationships are easy to solve in one step, but many real-world situations require multiple steps. Multi-step proportional problems

Video Duration: 1 minute and 28 seconds
Tax, Tip, and Discounts
01:30
Tax, Tip, and Discounts

Tax, tips, and discounts are common real-world situations in which proportional reasoning is used. These problems involve finding a percentage of a pr

Video Duration: 1 minute and 30 seconds

Representing and Interpreting Proportional Relationships

Meaning of a Point (x, y)
01:30
Meaning of a Point (x, y)

Points on a graph represent relationships between two quantities. Understanding what a point (x, y) represents helps interpret real-world situations a

Video Duration: 1 minute and 30 seconds
Using Points to Compare Situations
01:26
Using Points to Compare Situations

Points on a graph can be used to represent and compare different situations. By analyzing these points, it becomes easier to understand how quantities

Video Duration: 1 minute and 26 seconds
Recognizing Proportional Graphs
01:30
Recognizing Proportional Graphs

Graphs are a powerful way to represent relationships between two quantities. One important type of relationship is proportionality. Recognizing propor

Video Duration: 1 minute and 30 seconds
Finding k from the Point (1, k)
01:25
Finding k from the Point (1, k)

In proportional relationships, the constant of proportionality, k, describes how two quantities are related. One of the simplest ways to identify k is

Video Duration: 1 minute and 25 seconds
What Is Slope?
01:29
What Is Slope?

Slope describes how a graph changes from one point to another. It helps explain how one quantity increases or decreases in relation to another.

Video Duration: 1 minute and 29 seconds
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Finding k Using Slope
01:30
Finding k Using Slope

In proportional relationships, the constant of proportionality, k, describes how one quantity changes compared to another. This constant can also be u

Video Duration: 1 minute and 30 seconds

Comparing Proportional Relationships

Comparing Using Tables
01:30
Comparing Using Tables

Tables are useful tools for organizing and comparing quantities. When relationships are shown in a table, patterns become easier to identify and analy

Video Duration: 1 minute and 30 seconds
Comparing Using Graphs
01:27
Comparing Using Graphs

Graphs provide a visual way to compare relationships between quantities. By examining how points and lines appear on a graph, patterns and differences

Video Duration: 1 minute and 27 seconds
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Comparing Using Equations
01:30
Comparing Using Equations

Equations provide a clear and precise way to compare relationships between quantities. By examining equations, it is possible to find out which relati

Video Duration: 1 minute and 30 seconds
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