The document defines and provides examples of fractions. It explains that a whole can be divided into equal parts, like eighths. It then discusses how the Sebastian family divided their pizza into 8 equal pieces, so the fraction of the whole pizza is 8/8. Various other fractions that equal 1 whole are shown, such as halves, thirds, fourths, and eighths. The key parts of a fraction - the numerator, denominator, and fraction bar - are also defined.