- http://www.visitingdc.com/images/national-mall-map.jpg
- There are several different examples of parallel lines and transversals in this map.
- Students are going to write a series of directions to take someone on a tour of the mall.
- Ask them to start their directions at the American History Museum and write a list of directions in a mathe-
matical way. - Students can work in small groups on this assignment.
- When finished, have the students swap directions with a neighboring group and check to be sure that the
directions work. - Have the groups provide each other with feedback on their directions.
- Make corrections as needed.
III.TechnologyIntegration
- Have the students explore proving lines parallel by watching the video.
- Use the following website.
- http://www.yourteacher.com/geometry/provinglinesparallel.php
- When finished, use this as a discussion starter.
IV.NotesonAssessment
- Collect student maps and directions.
- Check work for accuracy.
- Provide students with feedback/correction as needed.
Slopes of Lines
I.SectionObjectives
- Identify and compute slope in the coordinate plane.
- Use the relationship between slopes of parallel lines.
- Use the relationship between slopes of perpendicular lines.
- Plot a line on a coordinate plane using different methods.
II.Cross-curricular-Construction/Architecture
- Ask a roof designer, architect or contractor to visit the class and present information on designing a roof.
- Prepare the presenter that he/she needs to be able to talk about slope or pitch and how mathematics plays an
important role in construction. - Ask the students to write questions for the presenter to answer.
- Conduct a follow- up discussion with the students on career connections between architecture and slope.
III.TechnologyIntegration-RoofDesign
- Have the students use the following website to explore slopes and roof design.
- Given that the pitch of the roof is connected to the slope of the roof, students can see and explore the real life
application of how slope is used in construction. - http://www.roofgenius.com/roofpitch.htm
- There are several different websites that do a great job at this.
- Ask the students to begin with this one, and then explore further with other websites.
Chapter 3. Geometry TE - Enrichment