X Marks the Ram: Equations Game for Grades 6‑8

Balance the scale, beat the ram, open the chest.

Solve equations on a balance scale. Pick an operation and a number, apply it to both sides, and get x alone to open the treasure chest the ram is guarding. Do something to just one side and the scale tips. Covers one-step and two-step equations, variables on both sides, and brackets. Earn stars for fewer moves, or try the timed rush.

Play X Marks the Ram

Free. No signup. About 6 minutes per round.

Artwork for the math game X Marks the Ram
Grade 6 Grade 7 Grade 8 equations inverse operations balance method distributive property Ratios and Percents Algebra Mental Math and Word Problems

What kids practise

X Marks the Ram gives students repeated, low-pressure practice with equations, inverse operations, balance method, and distributive property. It is written for grades 6-8, with levels that let younger and older players start at the right difficulty. Every question is generated fresh, so a replay is never the same, and a wrong answer shows the correct one so the round teaches as well as tests.

How it plays

Controls: Mouse or touch: tap an operation, set a number, press Apply. Keyboard: A/S/X/D (or + - * /) pick the operation, digits and arrow keys set the number, T switches number/x-term, B/L/R choose the side, Enter applies, E expands brackets, U undo, H hint, K skip, P pause, M sound.

It works with a keyboard, a trackpad or a touch screen, so it runs on school Chromebooks, tablets and phones.

Standards

Common Core State Standards for Mathematics this game supports:

For teachers

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