Activity
Texas Instruments

Texas Instruments: The Midpoint Formula

For Teachers 9th - 10th
The purpose of the activity is for students to verify the results of the Midpoint Formula using the dynamic capabilities of Cabri Jr.
Handout
Oswego City School District

Regents Exam Prep Center: Geometry Vocabulary Resources

For Students 9th - 10th
A list of geometry definitions and a matching activity.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Coordinate Geometry Proofs

For Students 9th - 10th Standards
A lesson, practice activity, and teacher resource for exploring coordinate geometry proofs.
Activity
Texas Instruments

Texas Instruments: Midpoint of a Segment

For Teachers 9th - 10th Standards
Students review the basic geometry definitions of segment and midpoint, and learn to use drawing and measurement tools. They explore changes in measurements as the figure is altered.
Activity
Texas Instruments

Texas Instruments: Investigating Segments in a Quadrilateral

For Teachers 9th - 10th Standards
In this activity, students use the tools of Cabri Jr to test their knowledge of geometry. They investigate the properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral.