**Purpose:**

This instructional unit has been designed with
the high school geometry student in mind. It is based on the curriculum
standards developed for geometry in the Georgia public school
system and closely matches the quality core curriculum (QCC) objectives
established by the state. The unit develops material for high
school geometry teachers to use for approximately 10 days of mathematics
instruction. Students should be able to work through the material
and gain specific knowledge about finding area to various geometric
figures as well as make application of area to probability. The
lessons will incorporate the use of The Geometer's Sketchpad (GSP)
application software to enhance content development and give students
hands-on experiences with area and probability.

The student should be able to express a number as a fraction, decimal or percent.

The student should be able to graph equations and inequalities.

The student should be able to apply the Pythagorean Theorem.

**Lesson
Two **Area and Circumference of Circles

**Lesson
Three****
**Introduction to Probability and
the Fairness of a Game

**Lesson
Four **Introduction to Geometric
Probability

**Lesson
Five **More Geometric Probability