In this lesson, students bring together what they have learned so far about complex numbers and arithmetic operations on them. The main activity is an Information Gap where students must ask for the information they need to find the real and imaginary parts of complex numbers that have been multiplied, requiring them to use precise language as they work with their partner (MP6). In particular, for a complex number in the form , the real part is the real number and the imaginary part is the real number .