One-half is a fraction that represents one part of a whole divided into two equal parts. It is written as 1/2 and can be visualized by dividing a shape, like a circle or a rectangle, into two equal sections. Each section then represents one-half of the whole. In everyday life, one-half can be seen in various situations, such as sharing a pizza or cutting a cake. If a pizza is divided into two equal slices, each slice is one-half of the pizza. This concept is fundamental in mathematics and is used in many practical applications, including cooking and measuring.