**Like Fractions:**

Like fractions are fractions that have the same denominator. The denominator is the number below the fraction line, which represents the total number of equal parts into which the whole is divided. When the denominators of two fractions are the same, it means that the fractions represent the same size parts or units of a whole.

For example, let's consider the fractions 1/4 and 3/4. Both fractions have the same denominator, which is 4. This means that both fractions represent the same-sized parts out of a whole that is divided into four equal parts. In this case, the whole is divided into four parts, and 1 out of the 4 parts is shaded for the fraction 1/4, while 3 out of the 4 parts are shaded for the fraction 3/4.

**Unlike Fractions:**

Unlike fractions are fractions that have different denominators. The denominators of unlike fractions represent different total numbers of equal parts into which the whole is divided. When the denominators of two fractions are different, it means that the fractions represent different-sized parts or units of a whole.

For example, let's consider the fractions 1/3 and 2/5. The fraction 1/3 represents one part out of a whole divided into three equal parts, while the fraction 2/5 represents two parts out of a whole divided into five equal parts. Since the denominators are different, the fractions do not represent the same-sized parts or units.

**Unit Fraction:**

A unit fraction is a fraction where the numerator is 1 and the denominator is a whole number greater than 1. The numerator represents the number of equal parts being considered, while the denominator represents the total number of equal parts into which the whole is divided.

For example, let's consider the fraction 1/5. In this fraction, the numerator is 1, which means we are considering one part out of the whole. The denominator is 5, which means the whole is divided into five equal parts. Therefore, the fraction 1/5 represents one-fifth of the whole.

Unit fractions are often used to represent fractions of a whole when dividing it into equal parts. They are also helpful in understanding the concept of fractions and their relationship to the whole.