Tuesday, January 1, 2013

Triangle Centers

I am in the process of working through a series of lessons on triangle centers.  So far, I've made it through the perpendicular and angle bisector theorems, as well as perpendicular and angle bisectors of triangles.  I am posting what I have accomplished here in an effort to get input on whether these seem to be too difficult.  Are my expectations too high?  My students are average level sophomores.   I am wavering on including more basic skill level types of questions along with the problems currently on the worksheet.

I have considered updating parts of it by incorporating some sort of technology investigation using either TI-84s or 92s, but would have to incorporate some sort of training on how to use the Cabri environment before looking at triangle centers.  I think this would be especially useful in portions of the investigation into angle bisectors of a triangle.

I thank you in advance for any help or advice.

Perpendicular Bisector Theorem Investigation

Angle Bisector Theorem Investigation

Perpendicular Bisectors of a Triangle Investigation

Angle Bisectors of a Triangle Investigation

4 comments:

  1. I am posting what I have help me with math accomplished here in an effort to get input on whether these seem to be too difficult.

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  2. Marsha, here is a task I modified from GA ed. Site, locating Amusemeny park...hope the link works. I used it as a writing for publication task, students were asked to write a memo with their recommendation, you can easily modify it for use with tech, i used patty paper for constructions. At first it seems to be a straightforward task, but there are many factors you can consider when making a choice for location.
    http://db.tt/OnUJsM8j

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  3. http://db.tt/w8V7v2KI
    Here is a foldable as well.

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    Replies
    1. Pam,
      Thanks for sharing this information.

      Delete