Introduction
Students will define and identify relationships associated with parallel lines and transversals; perpendicular lines and the angles formed by these lines.
Prerequisite Experience
Fundamental knowledge of the Cabri Jr. (TI-84+ Calculator) application. Internet search experience and making a Powerpoint presentation.
Teacher Prep Time
1-2 hours
Project
Powerpoint presentation of concepts associated with lesson, review game for vocabulary, and demonstration of the Cabri Jr lab.
Assessment/Grading
RubricLesson Plan Details
Engage
When thinking of examples of parallel lines we often think of railroad tracks. Today’s question is “are parallel lines always parallel”? If this is true then what properties make lines parallel? When a transversal is introduced and angles formed, are there properties that maintain the parallel lines? Is there an example where parallel lines do not follow the definition and rules? To find the answers to these and other similar questions you will need to do some research. You are to present your findings in a Powerpoint presentation to the class. Your work should include examples and problems. Remember you will be the expert!
You may work in groups.
Explore
You will need internet access to explore the topic and a word processor to record your findings. Use the words and ideas in the explain section to guide your research.
(Add list of possible websites)
Using your calculator explore the directed lab on parallel lines, incorporate your findings into your presentation.
Explain
As you begin the outline for your presentation you should define parallel lines, transversal and the angles associated with two parallel lines and a transversal, skew lines, and slope of a line. In your investigation make sure to include definitions of types of geometry. Each group should submit their findings for approval before beginning the presentation portion.
Elaborate
Now it is your turn to shine – show your classmates what you have learned.
The teacher will identify and divide the project into sections then assign parts to subgroups. Each group will prepare and share a Powerpoint presentation on their portion of the material. Be prepared to discuss your portion and answer classmates questions.
Take caution to proof read everything more than once and by several members of the group. Check your examples and problems for accuracy.
Evaluate
Rubric for individual grade, group self evaluation with rubric and self evaluation by answering the following questions in your math journal:
What did I know before the project?
What new knowledge did I gain from the project?
How will I use my new knowledge?
Extend
Share your lesson with the peer tutors for use in other classes. Look for and document examples of parallelism outside the classroom.