## 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.

Differentiation
Students with Disabilities: Differentiation

# Graphing Parallel and Perpendicular Lines (Day 1 of 2)

Unit 5: Graphing Linear Functions
Lesson 5 of 7

## 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.

Print Lesson
21 teachers like this lesson
Standards:
Subject(s):
80 minutes

### Noelani Davis

##### Similar Lessons

###### SUPPLEMENT: Linear Programming Application Day 1 of 2
Algebra I » Systems of Equations and Inequalities
Big Idea: This lesson gives students the opportunity to synthesize what they have learned before they begin to create their own linear programming problems.
Favorites(1)
Resources(17)
Boston, MA
Environment: Urban

###### Ellipses
12th Grade Math » Conic Sections
Big Idea: After learning to write the equation of an ellipse, students design an elliptical pool table that would guarantee that even the worst player can always make a shot.
Favorites(5)
Resources(19)
Phoenix, AZ
Environment: Urban

###### The Number Line Project, Part 2: Two Dimensional Number Lines
Algebra I » The Number Line Project
Big Idea: The mathematical structures we build today will be used to justify many algebraic ideas in the coming months.
Favorites(42)
Resources(25)
Worcester, MA
Environment: Urban