The Back Page: My Favorite Lesson – Slopes of Parallel and Perpendicular Lines: A Visual Justification

Patricia Wallace-Gomez

doi:10.5951/MT.104.9.0728

Jump to Content Jump to Main Navigation

The Back Page: My Favorite Lesson – Slopes of Parallel and Perpendicular Lines: A Visual Justification

Author: Patricia Wallace-Gomez

View More View Less

Volume/Issue:: Volume 104: Issue 9

Page(s):: 728

DOI:: https://doi.org/10.5951/MT.104.9.0728

Restricted access

NCTM members GET ACCESS here

Subjects:: Grade(s) or Audience, Grades 9-12, Ninth, Tenth, Eleventh, Twelfth, Math Topic, Algebra, Linear Equations and Inequalities, Functions and Trigonometry, Functions, Geometry, Shapes, Other Topic, Representations, Technology

Keywords:: CCSS.Math.Content.HSG-GPE.B.5; CCSS.Math.Content.HSG-CO.D.12; CCSS.Math.Content.HSF-IF.B.6

When teaching slopes of parallel and perpendicular lines, I want students to have a visual image of the lines, not just memorize a formula. A simple exercise with parallel lines can get the message across.

Contributor Notes

^*Patricia Wallace-Gomez, patricia.w.gomez@hotmail.com, teaches geometry and second-year algebra at Dr. T. J. Owens Gilroy Early College Academy (GECA) in Gilroy, California. Her interests revolve around helping students understand the logical reasoning of mathematics and to appreciate its beauty. Taylor Hadnot

(Corresponding author is Wallace-Gomez patricia.w.gomez@hotmail.com)

Print
Save
Cite
Email this content

Share Link

Copy this link, or click below to email it to a friend
Email this content
or copy the link directly:

https://staging-pubs.nctm.org/abstract/journals/mt/104/9/article-p728.xml
The link was not copied. Your current browser may not support copying via this button.

Link copied successfully