The Zero the Math Hero - Geometry Tutor DVD Series teaches students through step-by-step example problems. This DVD teaches students about perimeter, circumference, and area of two-dimensional figures. The concept of the number pi is also represented with different approximations and many examples of finding perimeter and area are worked by using formulas. Several formulas for perimeter and area are used for different shapes such as: rectangles, squares, triangles, parallelograms, circles. Grades 8-12. 19 minutes on DVD.