This 8th grade Math parent guide explains the content in straightforward terms so they can support their children’s learning at home and will encourage caretaker engagement with lessons.

Our Teacher Guides are meant to support the use of our online course and unit content. Please use these to accompany the use of our content and for ideas to support struggling learners, those needing extension and for additional resources.

Students will complete a Functions Choice Board they will have two options from each section. What is a function, graphing linear functions and Graphing Quadratic.

This task describes two linear functions using two different representations. To draw conclusions about the quantities, students have to find a common way of describing them. We have presented three solutions (1) Finding equations for both functions. (2) Using tables of values. (3) Using graphs.

In CK-12 Middle School Math Concepts Grade 8, the learning content is divided into concepts. Each concept is complete and whole providing focused learning on an indicated objective. Theme-based concepts provide students with experiences that integrate the content of each concept. Students are given opportunities to practice the skills of each concept through real-world situations, examples, guided practice and explore more practice. There are also video links provided to give students an audio/visual way of connecting with the content.

Sample Learning Goals
Define a function as a rule relating each input to exactly one output and predictably acting on inputs
Predict outputs of a function using given inputs
Compose functions to create a new function
Interpret, compare, and translate between multiple representations of an algebraic function

In this lesson, students know that the definition of a graph of a function is the set of ordered pairs consisting of an input and the corresponding output. Students understand why the graph of a function is identical to the graph of a certain equation.

In this lesson, students know that when a system of linear equations has no solution, i.e., no point of intersection of the lines, then the lines are parallel.

In this lesson, students relate constant speed and proportional relationships to linear functions using information from a table. Students know that distance traveled is a function of the time spent traveling and that the total cost of an item is a function of how many items are purchased.

This lesson unit is intended to help teahcers assess how well students are able to interpret speed as the slope of a linear graph and translate between the equation of a line and its graphical representation.

This lesson is designed to introduce and extend students' knowledge on slope and linear equations. Students will be able to differentiate finding the slope to creating a linear equation.

In this lesson, students examine and recognize real-world functions, such as the cost of a book, as discrete rates. Students examine and recognize real-world functions, such as the temperature of a pot of cooling soup, as continuous rates.

This mini-unit is part of a much larger content focus on Linear Functions in an 8th grade Resource Math class. Students will be learning about the basics in functions and their use in Pre-Algebra. This unit allows students to receive direct interaction with teachers to receive content in a managable format, while giving them opportunities to learn and discover some of the content on their own. The mini-unit focus solely on the different representations of functions in their basic form. By the end of the unit, students will be able to identifying and compare and contrast different representations of functions.

This course was created by the Rethink Education Content Development Team in partnership with the North Carolina Virtual Public Schools. This course is aligned to the NC Standards for 8th Grade Math. 

This course was created by the Rethink Education Content Development Team in partnership with the North Carolina Virtual Public Schools. This course is aligned to the NC Standards for 8th Grade Math. 

This course was created by the Rethink Education Content Development Team in partnership with the North Carolina Virtual Public Schools. This course is aligned to the NC Standards for 8th Grade Math. 

In this lesson, students use rate of change to determine if a function is a linear function. Students interpret the equation y = mx + b as defining a linear function, whose graph is a line.