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This Characteristics of Parallel Lines lesson plan also includes:
- Characteristics of Parallel Lines - Teacher Version (doc)
- Characteristics of Parallel Lines - Student Version (pdf)
- Characteristics of Parallel Lines - Student Version (doc)
- Grade 8 Module 4: Teacher Materials
- Grade 8 Module 4: Student Materials
- Grade 8 Module 4: Copy Ready Materials
- Math Fluency Support for Grades 6-8
- Answer Key
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Systems of parallel lines have no solution. Pupils work examples to discover that lines with the same slope and different y-intercepts are parallel. The 27th segment of 33 uses this discovery to develop a proof, and the class determines whether systems have a solution based upon their slope and y-intercepts.
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CCSS:
Designed
Concepts
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Instructional Ideas
- Use technology to graph the lines using a large scale to cement the concept that lines with the same slope do not intersect
- Have individuals graph the equations in the problem set to verify their responses
Classroom Considerations
- Discussion of the proof about parallel lines addresses the high school standard HSG-GPE.B.5
Pros
- Includes alternative exercises to replace the proof
- For answers that have several answers that would be correct, the answer key provides a description of the correct response along with a sample answer
Cons
- None