Math
MATH · GRADES 7–9

A simple place
to learn math.

Short English lessons, worked examples, practice, and review. Start with the grade that matches what you are learning now.

Try a lesson Why I made this
3grade paths
124short lessons
620practice checks
A USUAL STUDY SESSION

One idea at a time

6–8 min
  1. STEP 01Read one short explanation
  2. STEP 02Work through one example
    Next
  3. STEP 03Correct five practice questions
  4. STEP 04Return later for review
AFTER FOUR LESSONSTry five mixed questions
WHY THIS EXISTS

Hi, I’m Sting. I’m a parent, and I like math.

I made this because my child needs to learn math. I wanted a site that is quiet, clear, and easy to continue the next day. I’m trying explanations, practice, review, and a few game elements to see what actually helps.

You are welcome to use it. If something is confusing or missing, leave an anonymous note on the feedback board. I’ll read it and see what I can improve.

CHOOSE A GRADE

Grades 7, 8, and 9

Every path is divided into four-lesson regions. You can try the site without an account; Google sign-in is only for saving progress across visits and devices.

GRADE7

Ratios, rational numbers, equations, geometry, statistics, and probability

32 lessons · 8 mixed checks

Open Grade 7 →
GRADE8

Real numbers, linear relationships, transformations, geometry, and data

52 lessons · 13 mixed checks

Open Grade 8 →
GRADE9

Algebra I: equations, functions, systems, polynomials, quadratics, and modeling

40 lessons · 10 mixed checks

Open Grade 9 →
G7 · 01

Ratios and Unit Rates

Compare two quantities and describe how they change together.

4 lessons · 1 mixed check
G7 · 02

Rational Number Operations

Work confidently with positive and negative fractions and decimals.

4 lessons · 1 mixed check
G8 · 01

Number Foundations

Read the language of math with confidence.

4 lessons · 1 mixed check
G8 · 02

Fractions & Percents

See how parts, decimals, and percents connect.

4 lessons · 1 mixed check
G9 · 01

Algebra Foundations

Use structure, notation, and properties with confidence.

4 lessons · 1 mixed check
G9 · 02

Linear Equations and Inequalities

Solve, explain, and model one-variable relationships.

4 lessons · 1 mixed check
SIMPLE AND ANONYMOUS

I don’t want to know who is getting which score.

Google sign-in is there so the same learner can return to saved progress. The site does not store the Google name, email address, profile photo, or original account identifier. The saved key is one-way transformed on the server.

Public leaderboards use a random nickname and abstract avatar. They never show grade, accuracy, lesson history, or a profile link.

  • No ads or behavior tracking
  • No searchable learner profiles
  • Leaderboard is opt-in
  • Feedback posts are not connected to progress
Read the plain-English privacy page
SAVE FOR NEXT TIME

Use Google only if you want to keep progress.

After sign-in, the site makes a random nickname and abstract avatar. It does not keep the Google profile information.

You can also try the demo first.

Continue with Google

For learners age 13 or older in this first version.