Activity Overview
Students use the Cabri Jr. App to construct, analyze, and transform mathematical models and geometric diagrams.
Before the Activity
See the attached PDF file for detailed instructions for this activity
Use the Cabri Geometry software to transfer files to the computer
During the Activity
Follow the Activity procedures:
Select the Triangle option
Construct a triangle
Measure the interior angles of the triangle
Move the vertex of the triangle and alter the figure
Observe that the sum of the three interior angles of the triangle remains the same
Explore other geometric figures
After the Activity
Review students work and discuss difficult concepts