ACT Math
Lesson Plan
Distance formula
Goals / Objectives
Compute the distance between two points using d = sqrt((x_2-x_1)^2 + (y_2-y_1)^2)
Derive the distance formula from the Pythagorean theorem by constructing a right triangle on the coordinate grid
Find the perimeter of a polygon given vertex coordinates by summing pairwise distances
Determine whether a triangle is right, isosceles, or equilateral by comparing its side lengths computed via the distance formula
Solve ACT-style problems where the distance and one endpoint are given, or where three points are given and the closest pair must be identified
Standards
G 605. Use the distance formula N 405. Find the distance in the coordinate plane between two points with the same x-coordinate or y-coordinate G 602. Use the Pythagorean theorem
Academic Vocabulary
Not in our source material
Remediation
Enrichment
This lesson’s brief has no Differentiation
Accommodations
Not in our source material
Anticipatory Set / Bell Work
Modeling
Check for Understanding
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Guided Practice
Independent Practice
Homework
Pacing
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