Distance Formula (Day 2)

Lesson Prep

Lesson Details

• Duration: 50 minutes

• Learning Goal: Build procedural fluency with calculating distance between 2 points while maintaining curiosity.

Prework

• Make sure you have a class set of compasses for constructions

• Watch this video to see how we use formative assessment

Answer Keys

• Link to Answer Keys

Classwork

• Warm Up

  • Link to Slides

• Practice

• Ungraded Formative Assessment / Construction Challenge

1:1 Devices Version

• Pear Deck

• Do Ungraded Formative Assessment on paper

Standards

Common Core

• HSG.GPE.B.7 – Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula.

• HSG.CO.D.12 – Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric software, etc.). Copying a segment; copying an angle; bisecting a segment; bisecting an angle; constructing perpendicular lines, including the perpendicular bisector of a line segment; and constructing a line parallel to a given line through a point not on the line.

TEKS

• G.2(B) – derive and use the distance, slope, and midpoint formulas to verify geometric relationships, including congruence of segments and parallelism or perpendicularity of pairs of lines

• G.5(B) – construct congruent segments, congruent angles, a segment bisector, an angle bisector, perpendicular lines, the perpendicular bisector of a line segment, and a line parallel to a given line through a point not on a line using a compass and a straightedge