Complex Compass
Claim squares by plotting complex numbers, converting polar coordinates, writing complex numbers in polar form, multiplying and dividing in polar form and using De Moivre’s Theorem. Get 4 in a row to win.
Try it free with your class: the demo runs right in your browser for 5 questions or 5 minutes, whichever comes first. No sign-up needed.
Or get every game, including all future games, with the All-Access Teacher License for $150.

What students practice
Plotting a + bi in the complex plane, modulus, distance and midpoint between complex numbers, converting polar points to rectangular coordinates with exact values, finding θ, equivalent polar coordinates with negative r, writing r(cos θ + i sin θ) in a + bi form and back, the argument of a complex number, conjugates as reflections, multiplying by i as a 90° rotation, multiplying and dividing in polar form, modulus and argument of powers, De Moivre's Theorem
Standards
OAS PC.T.1.5 · PC.T.4.1–2
Common Core: HSN-CN.B.4–6
More games for these standards and topics
How it works
- Open the game file in any web browser: Chromebooks, laptops or your smartboard. No accounts, no student logins and no internet needed once it's downloaded.
- Enter the players or teams, then press Start.
- Students take turns on one shared screen, so the whole class can play together on a projector or smartboard.
- Each purchase includes the game file and a one-page Quick Start guide.





