Geoboard Area 1: Polygon Area and Arithmetic Operations

This example uses a geoboard with multiple polygon vertices to demonstrate how to calculate the area of irregular polygons. Core math concepts include polygon area, arithmetic operations (addition, subtraction, multiplication, division), and median value in statistics. Construction: using GeoGebra's Polygon command, it connects a large set of points (A-Z, F_1-W_1) to form multiple polygons, leveraging grid coordinates for area computation. Suitable for upper elementary to middle school students to grasp area formulas, basic coordinate geometry, and the geometric interpretation of arithmetic operations. It also serves as a classroom demonstration tool for teachers.