Equivalent Fractions   - are equal fractions.
Two fractions are equivalent if they represent the same amount.
Although the numbers may look different, calculations will show that equivalent fractions are equal, or are the same fractions.
If a pizza is divided into 8 equal slices, and you get 4 of the 8 slices, then it is the same as receiving half.
This just means that the same pizza was divided into 2, and you got 1 of the 2 portions which is half.