Lesson 1: 2.1 Parallel & Perpendicular Lines

Why is it important that parallel lines never meet?

Parallel
perpendicular
transversal

CCSS.G.CO.C.9

I DO: Show images of railroad tracks and street intersections. Discuss why lines must be parallel (trains derailing).
WE DO: Manipulate wooden slats or pencils on desks to create parallel and perpendicular intersections.
YOU DO: Complete a drawing and classification worksheet identifying line relationships.
Recognize line types crucial for construction, roads, and design.
DOK 1

Support (Low): Picture sorting (ex. sorting photos into "Parallel" or "Perpendicular" bins).

Formative Assessment

Pencils
Wooden slats

Digital line drawing tools