This resource from the Mathematics Assessment Project was found at OER Commons. https://www.oercommons.org/courses/finding-equations-of-parallel-and-perpendicular-lines/view. This lesson unit is intended to help teachers assess how well students are able to understand the relationship between the slopes of parallel and perpendicular lines and, in particular, to help identify students who find it difficult to: find, from their equations, lines that are parallel and perpendicular; and identify and use intercepts.

In the Racing Away lab, students will understand the physical meaning of slope as a rate of change and the y-intercept in distance vs. time plots. Students will also come to understand the meaning of each part of writing a linear equation in two variables in slope-intercept form.

In this lab, students will determine the slope of a line when given two points on the line; write the equation of a line when given the graph of the line, two points on the line, or the slope and a point on the line; and graph linear equations in two variables. Throughout the lab, students make connections between and among multiple representations of functions using verbal descriptions, tables, equations, and graphs.

Objective: Students will explore counting boxes/squares to identify the numerical value of slope. Students must know the four types of slope prior to this activity. They will review the four types of slope (positive, negative, undefined, and zero slope) prior to visually counting slope.Note: Teacher must find a video showing roller coaster movement and have prepared for this activity.
The Extension activities are a VDOE Virginia Department of Education Slope and y-intercept resource with bingo game, link to teacher-made foldable, and lesson plan as well as a Drexel University mini- lesson plan with an additional roller coaster activity. Students can identify coordinate points and use materials to calculate slope using the slope formula.

Objective: Students will explore counting boxes/squares to identify the numerical value of slope. Students must know the four types of slope prior to this activity. They will review the four types of slope (positive, negative, undefined, and zero slope) prior to visually counting slope.Note: Teacher must find a video showing roller coaster movement and have prepared for this activity.
The Extension activities are a VDOE Virginia Department of Education Slope and y-intercept resource with bingo game, link to teacher-made foldable, and lesson plan as well as a Drexel University mini- lesson plan with an additional roller coaster activity. Students can identify coordinate points and use materials to calculate slope using the slope formula.