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### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# Introducing Complex Numbers

### A Brief Introduction to Complex Numbers

### A Brief Introduction to the Argand Diagram

### Complex Squares

Links to the University of Cambridge website
Links to the NRICH website Home page

Nurturing young mathematicians: teacher webinars

30 April (Primary), 1 May (Secondary)

30 April (Primary), 1 May (Secondary)

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This collection of resources has been designed to introduce students to complex numbers in an exploratory way. We have set challenges to provoke students to be playful within the structure of complex numbers and the Argand diagram, and we hope that this playful exploration will lead to a deeper understanding of the way complex numbers can be manipulated.

Age 14 to 18

Challenge Level

This problem offers practice in manipulation of complex numbers while gaining insight into their structure

Age 14 to 18

Challenge Level

This problem introduces the Argand diagram and invites students to explore complex number multiplication dynamically.

Age 16 to 18

Challenge Level

This problem invites students to explore on the Argand diagram the effects of squaring complex numbers.