how can you help a student understand that decimal numbers are fractions?
If the child understands money, you can start by using money as an example.
$0.25 = a quarter = 1/4 of a dollar
$0.50 = half a dollar = 1/2 of a dollar
$0.25 = a quarter = 1/4 of a dollar
$0.50 = half a dollar = 1/2 of a dollar