Reflection: Students with Disabilities Graphing Parallel and Perpendicular Lines (Day 1 of 2) - Section 2: Guided Notes + Practice


When teaching students that perpendicular lines will have slopes that are opposite reciprocals I found that some of my students with disabilities, particularly those with autism, struggled a lot with finding opposite reciprocals.  For those students I broke it down into these steps:

  1. write the slope as a fraction

  2. flip the fraction

  3. change the sign

Having these steps helped the students understand that the opposite reciprocal of 2 is not -2, nor is it ½.  Seeing it broken down into clear steps that you have to flip the fraction AND change the sign helped my students understand the concept.

  Students with Disabilities: Differentiation
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Graphing Parallel and Perpendicular Lines (Day 1 of 2)

Unit 5: Graphing Linear Functions
Lesson 5 of 7

Objective: SWBAT graph parallel and perpendicular lines by discovering the relationship between the slope of a pair of lines.

Big Idea: Through graphing students will deduce that the slopes of parallel lines are the same and the slopes of perpendicular lines are opposite reciprocals.

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