Activity Detail
If you are using a TI-73, TI-83, TI-84 or TI-89, there may be particular math or science applications you will need to download to use certain activities. If you are using TI-Nspire technology, please update your TI-Nspire handheld operating system or computer software to view the latest activities. The latest TI-Nspire operating system was released in June 2009.
Browse by Subject Submit Activity Saved Activities Advanced Search
  


add to saved activities



print this activity
 
Exploring Triangle Proportions Using Cabri Junior 2.0
 


Activity Overview

Students will construct a triangle, the segment joining the midpoints of two sides, take measurements of angles and sides to make conclusions and complete the theorem by discovery.

Before the Activity

The students will be exploring the similarity theorem: If a line segment joins the midpoints of two sides of a triangle, the segment is parallel to the third side and is half the length of the third side.

During the Activity

Students will construct a triangle, the segment joining the midpoints of two sides, take measurements of angles and sides to make conclusions and complete the theorem by discovery

After the Activity

Review student results:
  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary

    		Other Downloads




    view standards alignment
    view textbook alignment

    Subject Area:
    Math : Geometry : Similarity

    Author:
    JoAnn Miltenberg, Farmingdale High School, Farmingdale, New York

    Level:
    9-12

    Activity Time:
    40 Minutes

    Device:
    TI-84 Plus Family

    Apps:
    Cabri Geometry

    Software:
     

    Accessories:
     

    Other:
     

    Report an issue with this activity