Ninth graders learn to measure how steep a line is using rise over run, and to read a line's direction from the sign of its slope, then match each term to its meaning.
Students will be able to…
A gentle ramp and a steep staircase both climb, but not at the same rate. How do we put a single number on how steep a line is?
Project this and match each slope term to what it means — tap a term, then tap its meaning.
Tap any phase to open the teacher moves and student actions.
Two ramps rise the same height, but one is longer. Which is steeper, and how do you measure it?
Students match each slope term to its meaning.
Students find slope from a graph.
Students draw lines with target slopes.
Students reflect on what slope tells you.
Aligned to the Common Core State Standards for Mathematics (High School Algebra II).
Graph proportional relationships and interpret the unit rate as the slope of the graph.
Construct a function to model a linear relationship; interpret the rate of change (slope).
Calculate and interpret the average rate of change of a function over an interval.
Reason abstractly and quantitatively.
Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.
Have students draw one line with a slope of 2 and one with a slope of -1/2, labeling the rise and run that produce each. A printable slope worksheet is in the Mathematics library.
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A quick self-check with instant feedback, drawn from this lesson’s key terms.
A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.