Slope Discovery Power Point Activity by C. Hogan
Virginia Department of Education resource titled, "Slope Discovery," which is an activity resource in which the student will determine slope, write the equation in slope-intercept form, and graph a line.
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This is a lesson that introduces kids to the concepts of slope and y-intercept as they relate to multiplicative and additive relationships.
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.
Students compare slope as it relates to distance vs. time. Using a simulation on Desmos, students find that faster speeds create steeper slopes on a graph.