Illustrative Math Alignment: Grade 7 Unit 2

Topic

Linear Functions

Definition

Direct variation describes a linear relationship between two variables where one variable is a constant multiple of the other, expressed as y = kx, where k is the constant of variation.

Description

Direct variation is a fundamental concept in linear functions, illustrating how one variable changes proportionally with another. The constant of variation, 𝑘 k, represents the rate of change.

In real-world scenarios, direct variation can model relationships such as speed and distance, where distance traveled varies directly with time at a constant speed. Understanding this concept is crucial in fields like physics and engineering.

Topic

Linear Functions

Definition

Linear function tables display the input-output pairs of a linear function, showing how the dependent variable changes with the independent variable.

Description

Linear function tables are useful tools for understanding and analyzing linear relationships. They provide a clear way to see how changes in the input (independent variable) affect the output (dependent variable).

Topic

Ratios, Proportions, and Percents

Definition

The constant of proportionality is the constant value that relates two proportional quantities.

Description

The constant of proportionality is a fundamental concept in mathematics, particularly in linear relationships and direct variation. For example, in the equation y = kx, k is the constant of proportionality that relates y and x. This concept is crucial in fields like physics, where it is used to describe relationships such as speed (distance/time).

This is part of a collection of definitions related to variables, unknowns, and constants. This includes general definitions for variables, unknowns, and constants, as well as related terms that describe their properties.

Explore Hooke's Law using this Desmos graphing calculator activity. In this activity explore linear functions of the form y = mx. There is a companion worksheet for this activity, which subscribers can download. The worksheet is a PDF file. Related Resources To see additional resources on this topic click on the Related Resources tab above. Desmos Collection To see the complete collection of Desmos Resources click on this link.

In this Algebra Application, students study the direction between diameter and circumference of a circle. Through measurement and data gathering students analyze the line of best fit and explore ways of calculating pi. The math topics covered include: Mathematical modeling, Linear functions, Data gathering and analysis, Ratios, Direct variation. This is a great back-to-school activity for middle school or high school students. This is also a great crossover activity that ties algebra and geometry.

In this Slide Show, apply concepts of linear functions to the context of circumference vs. diameter.

Note: The download is a PPT file.

Related Resources

In this Slide Show, apply concepts of linear functions to the context of cost vs. time data and graphs.

Note: The download is a PPT file.

Related Resources

In this Slide Show, apply concepts of linear functions to the context of Hooke's law.

Note: The download is a PPT file.

Related Resources

In this Slide Show, apply concepts of linear functions to the context of Hooke's law.

Note: The download is a PPT file.

Related Resources

Topic

Linear Functions

Description

This image serves as the title card for a series of illustrations demonstrating applications of linear functions, specifically focusing on Hooke's Law. The series, comprising eight images, explores the relationship between force and displacement in springs, showcasing how linear models can represent real-world phenomena.

Topic

Linear Functions

Description

This image is part of a series illustrating applications of linear functions, focusing on Hooke's Law. It depicts a spring before and after being stretched by a weight, visually representing the fundamental concept of Hooke's Law.

The illustration shows a spring in its original state and then stretched by an object of mass m, extending by a length x. This visual representation helps students understand the relationship between the applied force (weight) and the resulting displacement of the spring, which forms the basis of the linear function in Hooke's Law.

Topic

Linear Functions

Description

This image is a continuation of the series on applications of linear functions, specifically illustrating Hooke's Law. It builds upon the previous image by introducing the mathematical equation F(x) = kx, which is the core of Hooke's Law.

The illustration shows that when a spring is stretched a distance x, a force F(x) is generated that is proportional to x. This visual representation, combined with the equation, helps students understand the linear relationship between force and displacement in springs.

Topic

Linear Functions

Description

This image is part of a series demonstrating applications of linear functions, focusing on Hooke's Law. It presents a practical application of the law by showing a data table alongside a weight scale, illustrating how Hooke's Law applies to everyday objects.

Topic

Linear Functions

Description

This image is part of a series demonstrating applications of linear functions, specifically focusing on Hooke's Law. It builds upon the previous images by introducing the general form of the linear function equation that describes the relationship observed in the weight scale experiment.

Topic

Linear Functions

Description

This image is part of a series illustrating applications of linear functions, focusing on Hooke's Law. It builds upon previous images by demonstrating how to calculate the spring constant 'k' using the data collected from the weight scale experiment.

Note: Here is the link to the video referenced: https://www.media4math.com/library/42143/asset-preview

Topic

Linear Functions

Description

This image represents the culmination of our exploration into applications of linear functions, specifically focusing on Hooke's Law. It serves as the final piece in a series of eight images, tying together all the concepts we've examined throughout this study of spring behavior and weight measurement.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, specifically focusing on linear function tables. It serves as a title card for a set of 10 clip art images that explore linear functions in tabular and graph form. This visual introduction sets the stage for understanding how linear functions can be represented and analyzed using tables.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on linear function tables. It presents a data table demonstrating that a linear function table shows a common difference for values of f(x). This visual representation helps students understand the fundamental characteristic of linear functions - the constant rate of change.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, specifically linear function tables. It builds on the previous image by showing that the common difference in a linear function can also be negative. This concept is crucial for understanding decreasing linear functions and their representation in tabular form.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on linear function tables. It presents a new version of the previous table, this time demonstrating that the common difference can also be zero. This concept introduces students to constant functions, a special case of linear functions where the output remains the same regardless of the input.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on the relationship between linear function tables and graphs. It shows both a data table and a linear graph of data points, demonstrating that the graph of a Linear Function Table is a series of collinear points. This visual representation helps students connect tabular and graphical representations of linear functions.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on linear function tables and their corresponding graphs. It presents a variation of the previous image with a new set of data, demonstrating that when the common difference is positive, the orientation of the graph is upward from left to right. This helps students understand the concept of positive slope in linear functions.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on linear function tables and their corresponding graphs. It shows a variation of the previous image with a new set of data, demonstrating that when the common difference is negative, the orientation of the graph is downward from left to right. This helps students understand the concept of negative slope in linear functions.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on linear function tables and their corresponding graphs. It presents a variation of the previous image with a new set of data, showing that when the common difference is zero, the orientation of the graph is horizontal. This helps students understand the concept of zero slope in linear functions, also known as constant functions.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on linear function tables. It shows a variation of the previous image with a new set of data, demonstrating that data gathered in a table can show a linear pattern. This concept helps students understand how to identify linear relationships from tabular data.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on linear function tables and equations. It continues from the previous image, now including the equation f(x) = 0.5x - 3. This demonstrates that when a data set shows a linear pattern, it can be modeled by a linear function equation. This concept helps students understand the connection between tabular data and algebraic representations of linear functions.

Topic

Linear Functions

Description

This image serves as a title card for a series of 10 clip art images that explore graphs of linear functions. It sets the stage for understanding how linear functions can be represented and analyzed graphically, introducing students to the visual aspect of these mathematical concepts.

Using visual aids like this title card can help engage students and prepare them for the upcoming content. It provides a clear introduction to the topic and helps organize the learning material in a visually appealing way.

Topic

Linear Functions

Description

This image is the final in a series illustrating key concepts in linear functions, focusing on the special case of vertical lines. It presents a variation of the previous image, now including a vertical line in the graph to demonstrate an important exception in linear functions.

The image highlights that vertical lines are the only orientation not allowed in standard linear functions. This concept is crucial for students to understand the limitations of the slope-intercept form and to recognize when they need to use alternative representations.

Topic

Linear Functions

Description

This image presents a data table alongside a linear graph with the slope and y-intercept labeled. It demonstrates the connection between tabular data and graphical representation of linear functions, helping students understand how numerical values translate into visual patterns.

By incorporating this visual aid, teachers can enhance students' comprehension of the relationship between data points and their graphical representation. This image serves as a bridge between algebraic and geometric interpretations of linear functions.

Topic

Linear Functions

Description

This image displays the general form of the slope-intercept equation (y = mx + b) with definitions of m and b. It provides a crucial link between the algebraic representation of linear functions and their graphical interpretation, helping students understand how each component of the equation affects the graph.

Using this visual aid can significantly enhance students' understanding of the slope-intercept form and its relationship to linear graphs. It serves as a reference point for discussing how changes in m and b impact the line's appearance on a coordinate plane.

Topic

Linear Functions

Description

This image continues from the previous one, now with labeled slope and y-intercept. It provides a visual breakdown of the general equation for a linear function, helping students understand this fundamental concept in a step-by-step manner.

By using this visual aid, teachers can guide students through the process of understanding the slope-intercept form, reinforcing the connection between the algebraic definition and its graphical representation. This image is particularly useful for students who benefit from seeing mathematical concepts broken down into clear, visual steps.

Topic

Linear Functions

Description

This image continues from the previous one, showing the slope calculation ratio. It demonstrates the importance of expressing slope as a ratio, which can help students more easily interpret and compare different linear functions.

Incorporating this visual aid into lessons can help reinforce the concept of slope simplification and its importance in analyzing linear functions. It provides a clear example of how mathematical operations can be applied to make expressions more manageable and meaningful.

Topic

Linear Functions

Description

This image presents a variation of the previous image with the y-intercept highlighted. It emphasizes the significance of the y-intercept in linear functions, helping students understand its role in determining where the line crosses the y-axis.

By using this visual aid, teachers can draw attention to the y-intercept and its importance in interpreting linear functions. This image can help students connect the 'b' value in the slope-intercept form to its graphical representation, enhancing their understanding of how equations relate to graphs.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on the domain of linear functions. It continues from the previous images in the series, now highlighting the concept of domain in linear functions.

The image presents a continuation of the previous graph with the domain identified. This visual representation helps students understand that the domain of a linear function extends infinitely in both directions on the x-axis.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on the range of linear functions. It presents a variation of the previous image, now highlighting the concept of range in linear functions.

The image shows a variation of the previous graph with a label for the range. This visual aid helps students understand that the range of a linear function, like its domain, extends infinitely in both directions, but on the y-axis.

Topic

Linear Functions

Description

This image is part of a series illustrating key concepts in linear functions, focusing on the various orientations of linear functions. It shows the slope-intercept equation alongside several linear graphs, emphasizing the infinite possibilities for linear function orientations.

The image demonstrates that linear functions can have an infinite number of orientations, extending infinitely in all directions. This concept helps students understand the versatility and wide-ranging applications of linear functions in modeling real-world relationships.

Learn the basics of direct variations. Graphical and algebraic representations of direct variations are shown, as well as examples of such functions.

This YouTube video describes Hooke's Law, which is an application of linear functions of the form y = kx.

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library

This is part of a collection of math worksheets on the topic of linear function tables.

Related Resources

Worksheet Library