Arc Length and Sectors
Investigate the mathematics of arc length and sectors.
Explore the relationships among the area formulas for parallelogram and rectangles.
Exploring Areas of Irregular Polygons
Explore different ways to find areas of irregular polygons using the three basic shapes of rectangles, parallelograms, and triangles.
Exploring Diameter and Circumference
Explore the relationship between the diameter and circumference of a circle.
Fixed Perimeter Rectangles
Investigate side length and area in a rectangle with fixed perimeter.
Side Length, Perimeter, and Area of a Rectangle
Explore the effects of changing base (or height) of a rectangle on it's perimeter and area.
In this lesson, students will visualize that areas of irregular shapes can be found by determining the sum of smaller, more familiar shapes.