The document provides an introduction to fractions. It defines a fraction as the ratio of two whole numbers, with the top number called the numerator and the bottom number called the denominator. It explains that a fraction is proper if the numerator is smaller than the denominator, and improper if the numerator is equal to or larger than the denominator. It also discusses equivalent fractions and how two fractions are equivalent if you can find a whole number that divides the numerator and denominator of one fraction to give the other fraction.