How to Find a Triangle's Belly Button

"How to Find a Triangle's Belly Button" is a fun book for introducing GEOMETRY to young students. The book is adapted to be understood by children from upper elementary school to middle school with hands-on practice in geometry applications. Such applications sharpen skills in observation, comparison, and logic. What is needed at the end is a simple compass, a ruler, and a pencil. The book provides interactive testing, usage examples and some blank pages for practicing. Geometry is, with arithmetic, one of the oldest branches of mathematics. It deals with properties of space that are related to distance, shape, size, and relative position of figures. Based on Euclidean geometry, it introduces the intuitive notions of point, line, plane, distance, angle, surface, and curve, as fundamental concepts. Often developed with the aim to model the physical world, geometry has applications to almost all sciences, and to art, architecture, and other activities that are related to graphics.