Math Scrimmage

Free founding season for 2026–27 teams

Practice like it's meet day.

Math Scrimmage is the practice coach for math competition teams. Your kids practice questions written in the style of their competition, focused on the topics that actually show up. You see who needs help with what, without making a single worksheet.

Request a founding spot See how it works

For coaches and parents of elementary and middle-school teams. Works in any web browser; an iPhone and iPad app is in beta.

Illustration with made-up data. Students A–E are fictional.
The problem

Coaching a math team shouldn't mean building one from scratch.

Most competition coaches are volunteers or teachers with a day job. Practice ends up stitched together from whatever is on hand.

  • Old test PDFs
  • Photocopied worksheets
  • A spreadsheet of scores
  • A quiz game for warm-ups
  • Emails to parents

With Math Scrimmage

One place for practice, homework, progress and parents.

  • Questions in the style of your competition, matched to each kid's level.
  • A dashboard that shows which topics your team will miss, before meet day does.
  • Homework in two clicks, graded for you, or set once and sent every week.
  • A lesson and practice sheet after every test, made from each kid's own mistakes.
  • A weekly report for every family, written for you to approve.
How it works

Three steps to a team that's ready.

Set up once, and the practice adjusts itself to every kid on the team.

  1. Add your team

    You give each kid a username and PIN. No kid email addresses, nothing for kids to sign up for. Parents get their own sign-in.

  2. Kids practice

    Short tests in the competition's style. Each kid gets harder questions as they improve, and more practice on the topics that come up most in past tests.

  3. You coach

    See which topics the team is shaky on, which kids need a hand, and which mistakes they share. Assign homework or run a practice meet.

Features

Built for coaches. Useful for parents.
Fun for the team.

For coaches

Know what your team will miss before the meet does.

Math Scrimmage learns from past tests which topics actually show up, and tracks how every kid is doing on each one.

  • Team dashboard. The topics your team is likely to miss, who's struggling, who's excelling, and the mix-ups kids have in common.
  • Homework in two clicks. Adaptive or a fixed set, with release and due dates. Printable, too.
  • Weekly homework on autopilot. Set a schedule once; homework goes out every week and is handed in on its due date, even if a kid forgets.
  • You have the last word on grading. Mark any answer right or wrong after the fact, and scores, levels and summaries update.
  • Practice meets. Full mock tests, so meet day feels familiar.
  • Countdown, team goal and cheers. Count down to the competition, set a weekly goal, and send a kid a cheer when they earn it.
  • Activity feed and question flags. See practice as it happens, and flag any question that looks off.
Illustration with made-up data.
How kids practice

A wrong answer turns into the next thing they learn.

Practice adapts to each kid, topic by topic. After a miss, they don't just see the right answer.

  • An explanation of the right answer, in plain words.
  • "Work through it" walks them step by step through a similar problem.
  • The likely mix-up behind their answer, spotted by AI, like adding the tops and bottoms of fractions.
  • Spaced review, so mastered topics stay mastered. A topic only counts as mastered after a correct answer a week later.
  • Written answers graded like a teacher would. A misspelled word doesn't cost a point; a wrong number does. Answers that look wrong get a second look before the score is final.
  • A fair hearing. If a kid thinks they were graded wrong, they can appeal to their coach.
Illustration of a practice question.
After every test

Every test turns into a short lesson for home.

Minutes after a test, each kid gets a practice sheet built from the problems they missed, and parents get it by email.

  • A real mini-lesson. For each kind of problem missed: the big idea and why it works, the steps, an example worked together, and the exact slip to watch for.
  • Pictures that show the math. Fraction bars, number lines and area models sit right under the step they explain.
  • One new problem of each kind, with a separate answer sheet that shows how to solve it.
  • Checked twice. Every answer on the sheet is solved again independently; anything that doesn't agree is rewritten or left out.
  • Not graded. It's for learning between tests, at the kitchen table.
Illustration of a practice sheet. The student is fictional.
For parents

Know exactly what your child is working on, and what to practice this week.

Parents get their own sign-in, separate from their child's.

  • A weekly report, written by AI and approved by the coach before it's sent.
  • Every test, answer by answer. Your child's answer next to the right one, with how to solve it.
  • A practice sheet after every test, by email and on your child's page.
  • Nothing gets lost. Every email we've sent you is kept in your account to read again.
  • A report card by topic, and several kids under one sign-in.
  • You're in charge of your child's data. Nothing is kept until you give permission, and you can delete it all any time.
Illustration. Student and coach names are fictional.
What keeps kids coming back

A little game, a lot of practice.

Streaks

Practice days in a row, with a streak saver for the day life gets in the way.

Badges and a skills map

A map of every topic, filling in as each one is mastered.

Problem of the Day

One fresh problem to try every day.

Speed drills

Quick rounds that build the fast, sure arithmetic every timed test needs.

Where you stand

Kids see their place on the team where they're in the top half, like "#2 of 8 in Fractions", and a tip to move up everywhere else. No names or scores, ever.

What we do especially well

Questions you can trust. Privacy built for kids.

Most of our students are under 13, so security and privacy come first. See every protection we have.

Every question reviewed before a kid sees it

A separate AI reviewer checks each new question for a wrong answer, a missing fact, a giveaway or the wrong grade level. In our October review it retired 638 of 4,205 questions that didn't meet the bar.

Grades that hold up

Multiple-choice answers are shuffled and graded by the answer itself. Written answers forgive spelling, not math, and get a second look before scores and emails go out.

Parents give permission first

A child's practice data is kept only after a parent says yes, and a parent can delete all of it in a few clicks. Coaches can't give permission for a family.

Kids' names never reach the AI

When AI writes a summary or report, students are "Student A", "Student B". Names are put back on our own server. No ads, no selling data, no trackers.

What it is, and isn't

Built for competition prep, not a whole curriculum.

Your school already teaches math. Math Scrimmage is the practice field: the part between class and the competition.

What it does

  • Practice in the style and format of the competition
  • More practice on topics that show up most in past tests
  • Practice meets, homework and a team dashboard
  • Reports that keep families in the loop

What it doesn't

  • Replace your school's math program
  • Teach new topics with video lessons
  • Show ads or sell data
  • Ask kids for an email address
Founding season

Free for the 2026–27 season.

We're inviting a small group of competition teams to use Math Scrimmage free this season, in exchange for honest feedback. Send us a short email and we'll write back.

Tell us:

  • your school or team name
  • which competition you're preparing for
  • the grades and about how many kids
Email us for a spot Already on a team? Sign in

Coaches only, please. We'll set up your team and walk you through it. Please don't include children's names in your email.

FAQ

Questions coaches and parents ask.

Which competitions does it support?

Math Scrimmage was built by a parent-coach for an elementary math competition team in California, and today it's tuned to that competition for grades 4 to 6. More competitions are coming. If your team prepares for a different one, email us anyway and tell us which.

Do kids need an email address?

No. The coach gives each kid a username and a PIN. Kids never sign up for anything themselves.

Where do the questions come from?

They're written by AI in the style of the competition, using past tests as a guide to which topics show up and how they're asked. Every new question is reviewed by a separate AI checker before any kid sees it, a daily review catches anything new, and coaches can flag any question that looks wrong.

How does it decide what each kid practices?

Each kid has a level for every topic. Questions get harder as they improve, missed topics come back within a session or two, and topics that show up most on past tests get more time. A topic only counts as mastered after a correct answer a week later.

What do parents see?

Every test with their child's answer next to the right one, a practice sheet after each test, a weekly report written by AI and approved by the coach, a report card by topic, and every email we've sent them. Parents have their own sign-in.

Does it work on phones and tablets?

Yes. It runs in any web browser on a computer, tablet or phone. An iPhone and iPad app is in beta for founding teams.

What does it cost?

Nothing for the 2026–27 founding season. We'll share pricing for later seasons well before they start, and you can decide then.

Are there ads, or do you sell data?

No ads, and we don't sell data. This website has no cookies, analytics or trackers at all. See our privacy statement.

How do you protect children's privacy?

We follow the U.S. children's privacy law (COPPA). A parent gives permission before we keep a child's practice data, and can see everything and delete it at any time. Kids don't have email addresses in the app, and their names are never sent to the AI service that helps write questions and reports. Read the app's privacy notice for families.

Something else? hello@mathscrimmage.com