Code Cracker

A single-player spy game for 6th grade. Decode intercepted messages by turning word phrases into algebraic expressions and back, name terms and coefficients, and finish with a skills report for 6.EE.A.2a and 6.EE.A.2b.

Grade 6Single player1 studentNo student loginsWorks offline

$5Buy Code Cracker ▶ 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 Code Cracker, a single-player math practice game

What students practice

+ and − phrases, × and ÷ phrases, two-step phrases, parentheses, expression → words, parts of expressions

Standards

Common Core: 6.EE.A.2a · 6.EE.A.2b

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.
Each student types their name and picks a level on the world map. Levels get harder after 3 right in a row and easier after a miss.
Students play on their own device. Missed problems come back for a second chance, and when they finish, the skills report shows every skill as Mastered, Still learning, Needs help or Not reached, with a check code for the teacher.
Each purchase includes the game file and a one-page Quick Start guide.