This lesson is dedicated to division of radicals. Another way of thinking of this is just taking the square root of a fraction. This turns out to follow rather easily from the previous lessons and is not much of a jump at all. This ends up leading into the idea of rationalizing the denominator of a fraction by changing radicals in the denominator into whole numbers by multiplying by the radical part in the numerator and denominator. This is a very critical lesson that can sometimes be confusing to students.