Lesson Plan: Modulus of a Complex Number | Nagwa Lesson Plan: Modulus of a Complex Number | Nagwa

# Lesson Plan: Modulus of a Complex Number Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use the general formula for calculating the modulus of a complex number.

#### Objectives

Students will be able to

• understand that the modulus of a complex number is equal to the square root of the sum of the squares of the real and imaginary parts of the number,
• find the modulus of a complex number in Cartesian form,
• understand that the modulus of a complex number is the distance of the complex number from the origin in a complex plane,
• understand that the modulus of the complex conjugate is equal to the modulus of its complex number,
• use the properties of the modulus of complex numbers to solve problems.

#### Prerequisites

Students should already be familiar with

• the Pythagorean theorem,
• complex numbers in Cartesian form,
• operations on complex numbers in Cartesian form,
• Argand diagrams,
• complex conjugates and their properties.

#### Exclusions

Students will not cover

• complex numbers in exponential or polar form.