What's My Rule?

Feed numbers into the rule machine, study the last 10 inputs and outputs, then crack the rule by writing it as an equation like 2x + 3 = y. Extreme mode adds exponents.

Grades 6–8 & Algebra 1Function machine1–6 players or teamsNo student loginsWorks offline

$5Buy What's My Rule?▶ Play the free demo 🎁 Get this game free

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.

Screenshot of What's My Rule? in the middle of a game

What students practice

Input/output tables, finding the rule from a table, writing linear equations like y = 2x + 3, negative slopes and constants, quadratic and cubic rules (Extreme)

Great for

Whole-class review on the smartboard, math centers, test prep, early finishers and sub plans. No prep and no student logins.

Standards

OAS 6.A.1.2–3 · PA.A.2.1–2.2

Common Core: 6.EE.C.9 · 8.F.A.3 · 8.F.B.4 · HSF-BF.A.1

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.