In my experience the best way to start off with any lesson on absolute value is to break out a numbers line. The distance forward or back from the zero point is considered a value. On these worksheets we are working with a more complicated numbers that a simple negative or positive integer, but the basic concept still holds true. Try to determine the distance from the point of origin for each value. You can solve for the absolute value of complex numbers by plugging the values of the provided variables.
With these lessons and activities, students will learn the concept of finding the absolute value of a complex number by using the proper formula needed to solve for the variables given.