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Solver Squad Elite Glossary For Grown-Ups Store · opens 13 Nov
SEPTEMBER · WEEK 1

This week: letters can stand for numbers.

Five days, five Missions, one Boss Battle on Friday.

This week’s Missions

Start Here Get the full Mission Pack ↓ Free · no account · nothing to sign up for

A Mission is one day’s practice — a free printable PDF with the worked answers included. Also known as a free algebra 1 practice worksheet.

Today’s trap

Today’s Bandit Error

Bandit added the 3 and the 7 like they were the same kind of thing. Can you catch it in five seconds?

Bandit wrote

3x + 7 = 10x

Wrong — marked with an ✗ and shown in Warning Red #FF1744.

It should read

3x + 7 stays as it is

Correct — marked with a ✓ and shown in Emerald Glow #00C853.

Solver Squad Elite

Beat Friday. Get your name on the wall.

Solve the Boss Battle for a shot at Monday’s video — three names read out each week, first names only, and every one goes on the wall for the month.

See the wall

0

solvers on the wall — the first names go up Monday 7 September.

  • Your name here
  • And here
  • And here

The wall opens after Week 1’s Boss Battle.

Meet the Squad

A new teacher every month. One student who never leaves.

Sunny Bun, a calm rabbit mascot in a cream Solver Society hoodie, one hand open in welcome.
September · The Teacher

Sunny Bun

Calm, unhurried, never talks down. Ever.

Bandit Bun, an energetic rabbit mascot in a navy varsity jacket and grey beanie, listening.
Every month · The Student

Bandit Bun

Impulsive, funny, always first to guess and usually first to get it wrong — on purpose, so you don’t have to. He is on your side, every single month.

The year ahead

Nine months, nine teachers. You are here in September — the rest are still ahead of you.

Sep NOW

Sunny Bun

The Teacher

Calm, unhurried, never talks down. She starts with what a letter is actually for.

Foundations: Variables & Expressions

Oct AHEAD

Finn the Fox

The Detective

Every equation leaves a trail. Finn follows it back to x.

Solving Equations

Nov AHEAD

Bella the Bear

The Gatekeeper

Some answers get through and some do not. Bella decides which.

Inequalities

Dec AHEAD

Ollie the Owl

The Oracle

Give Ollie an input. He already knows what comes back out.

Relations & Functions

Jan AHEAD

Penny the Penguin

The Navigator

Two numbers and a direction. Penny never gets lost on a grid.

Linear Equations & Graphing

Feb ART PENDING

Harper the Betta Fish

The Harmonizer

Two equations, one place they agree. Harper finds it every time.

Systems of Equations

Mar AHEAD

Nyx the Bat

The Night Owl

Nyx counts in doublings. Small numbers get big faster than you think.

Exponents & Exponent Rules

Apr AHEAD

Ruby the Ragdoll

The Organizer

Ruby takes it apart, then puts every piece back where it belongs.

Polynomials & Factoring

May AHEAD

Jingles the Dog

The Memory Keeper

Jingles remembers all nine months. Time to prove that you do too.

Quadratics + Year-End Review

Meet the whole cast →

We never ask a student for an email address, and we never ask anyone’s age or grade.

Solver Society: Codes, Clues & Challenges – Fall 2026 Edition lands 13 November.

Get notified

Teaching or parenting a solver? Here is how to use this in a classroom or at a kitchen table.

For Grown-Ups →

Search keywords: algebra 1 worksheet, free algebra worksheets pdf, printable algebra worksheet, variables and expressions worksheet, what is a variable, 3x meaning, expression vs equation, terms coefficients constants, writing expressions from words, evaluating expressions substitution, order of operations, PEMDAS, number properties, combining like terms, distributive property, algebra 1 EOC review, 9th grade algebra help, high school algebra practice, algerbra, algbra, alegbra, expresions, coeficient, distributive propery, sunny bun, bandit bun, solver society.

Solver Society — Where problem solvers unite
Skip to main content
{{ l.label }} Store · opens 13 Nov
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Five days, five Missions, one Boss Battle on Friday.

This week’s Missions

{{ startLabel }} Get the full Mission Pack ↓ Free · no account · nothing to sign up for

A Mission is one day’s practice — a free printable PDF with the worked answers included. Also known as a free algebra 1 practice worksheet.

Today’s trap

Today’s Bandit Error

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Bandit wrote

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Wrong — marked with an ✗ and shown in Warning Red #FF1744.

It should read

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Correct — marked with a ✓ and shown in Emerald Glow #00C853.

Not here for this week? Start anywhere.

September so far — Foundations, with Sunny Bun

Variables, order of operations, number properties, like terms, distribution.

See the whole year →

Solver Squad Elite

Beat Friday. Get your name on the wall.

Solve the Boss Battle for a shot at Monday’s video — three names read out each week, first names only, and every one goes on the wall for the month.

See the wall

{{ eliteCount }}

solvers on the wall — the first names go up Monday 7 September.

  • {{ n }}

The wall opens after Week 1’s Boss Battle.

Meet the Squad

A new teacher every month. One student who never leaves.

Sunny Bun, a calm rabbit mascot in a cream Solver Society hoodie, one hand open in welcome.
September · The Teacher

Sunny Bun

Calm, unhurried, never talks down. Ever.

Bandit Bun, an energetic rabbit mascot in a navy varsity jacket and grey beanie, listening.
Every month · The Student

Bandit Bun

Impulsive, funny, always first to guess and usually first to get it wrong — on purpose, so you don’t have to. He is on your side, every single month.

The year ahead

Nine months, nine teachers. You are here in September — the rest are still ahead of you.

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{{ m.mascot }}

{{ m.role }}

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Meet the whole cast →

From Bandit’s Notebook

Read the Notebook →

We never ask a student for an email address, and we never ask anyone’s age or grade.

Solver Society: Codes, Clues & Challenges – Fall 2026 Edition lands 13 November.

Get notified

Teaching or parenting a solver? Here is how to use this in a classroom or at a kitchen table.

For Grown-Ups →

Every Mission, every Mission Pack, and the Monthly Mascot Pack are free. Always.
The store is for extras — books, badges, and things to keep.

Solver Society

Where problem solvers unite.Algebra 1, September through May.Grades 8–12.

Find us

© 2026 Solver Society.

Search keywords: algebra 1 worksheet, free algebra worksheets pdf, printable algebra worksheet, variables and expressions worksheet, what is a variable, 3x meaning, expression vs equation, terms coefficients constants, writing expressions from words, evaluating expressions substitution, order of operations, PEMDAS, number properties, combining like terms, distributive property, algebra 1 EOC review, 9th grade algebra help, high school algebra practice, algerbra, algbra, alegbra, expresions, coeficient, distributive propery, sunny bun, bandit bun, solver society.