Fraction Bars are visual tools used to represent fractions in a clear and straightforward way. They consist of rectangular bars divided into equal parts, where each part represents a fraction of the whole. For example, a bar divided into four equal sections can illustrate the fraction 1/4, with one section shaded to show the part being represented. These bars help students understand the concept of fractions by providing a tangible way to see how different fractions compare to one another. They can be used to teach addition, subtraction, and equivalence of fractions, making them a valuable resource in mathematics education.