15Q
20M
Get started

The math workbook that scores itself

Stop grading.
Start scoring.

15 problems on paper. One free app. One instant score.

Get the workbook — $14.99See a Sample Day
Free App IncludedNo SubscriptionEvery Wrong Answer ExplainedCommon Core Aligned
0

days of daily practice

0

problems per grade

0

min per session

<2

min screen time

Math practice isn't
the problem.

The nightly grading is. You spend more time checking answers than your child spent solving them.

Grade by hand every night
Instant score, 2 seconds
Answer key has errors
App-graded, always accurate
No clue what they struggle with
See exactly where they're stuck
Wrong answers stay wrong
Explained, then a free retry
Another yearly subscription
Buy the workbook once

Scan. Solve. Score.

Four steps, every day. Done in 20 minutes.

1

Scan the QR code

Each day has a QR code. Scan it to start the 20-minute timer.

2

Solve on paper

15 problems, 20 minutes. Pencil on paper — no screen needed.

3

Enter answers

Tap in answers on the app. Under 2 minutes.

4

Instant score

Graded in seconds. Every wrong answer gets a step-by-step explanation — and a free practice twin to try again.

Built for kids
who actually finish.

Same format every day. Limited screen time. Immediate feedback when the work is done.

A clear finish line

15 problems, then done. Your child can count to the last question before starting the first.

Solve on paper. Score in seconds.

Traditional practice on paper. Instant, modern feedback in the app. Paper-first isn't nostalgia — handwriting activates sensorimotor, visual, and language centers simultaneously in ways screen tapping cannot.

Neuroscience: MDPI Life, 2025

Same structure every day

Same format, same length, same routine. No decision fatigue for you or your child.

Wrong answers get a second chance

Every mistake gets a step-by-step explanation, then a free practice twin — a new problem on the same skill — so your child can try again. You never need to teach.

Wrong isn't the end.
It's the next problem.

When your child misses a problem, the app doesn't just mark it wrong and move on. First, a step-by-step explanation shows exactly where the thinking slipped. Then the app hands them a free practice twin — a new problem on the same skill, with new numbers — so they can try again and actually get it right.

1,200 practice twins per grade, included with every workbook. Never an upsell.

This week

5/5 days
MonTueWedThuFri

Topic heatmap

Fractions

92%

Decimals

85%

Place Value

78%

Geometry

64%

Measurement

52%

Operations

88%

Know where
they stand.

After every session the dashboard updates automatically. See scores, weak topics, and explanations — without hovering over homework.

Daily score trends at a glance
Topic heatmap shows weak areas
Wrong-answer explanations included
No app to manage — just open the link

See how scoring works.

Try a full 15-question sample day. Enter answers, see results, and preview the parent report. No signup.

Try free sample

Trusted by design.

Aligned, structured, and easy to check.

Built on learning science

Structured around Gagné’s Nine Events of Instruction, Bruner’s scaffolding, and Cognitive Load Theory (Sweller) — frameworks used in top-tier curriculum design.

Common Core aligned

1,200 questions per grade across 80 days, mapped day by day to Common Core standards.

Built for less screen time

About two minutes on screen to enter answers and see the score. 86% of parents say managing screen time is a top day-to-day priority (Pew Research, Oct 2025).

One price. Everything included.

No subscription. No upsell. Just the workbook.

15Q20MIXLKumon
Price$14.99 one-time$79–159 /year$150+ /month
Paper practiceIncludedNot includedIncluded
Instant scoringIncludedIncludedNot included
Parent dashboardIncludedIncludedNot included
Step-by-step explanationsIncludedNot includedNot included
Free retry problems (practice twins)IncludedNot includedNot included
No subscriptionIncludedNot includedNot included

Common questions.

Will my child actually finish this workbook?
Each day is one session — 15 problems, 20 minutes, then done. The same structure every day means less convincing, less negotiation, and a finish line your child can see from Day 1. 80 days, 80 sessions, one clear goal.
Is this just another math app?
The opposite. Your child solves on paper with a pencil — no phone in hand during the 20-minute session. The app is used only after, for under 2 minutes, to enter answers and see the score. EEG research shows handwriting activates motor, sensory, and cognitive regions simultaneously — forming neural connections that screen tapping cannot replicate (MDPI Life, 2025).
Does the app cost extra?
No. Instant scoring, 20-minute timer, parent dashboard, topic heatmaps, and step-by-step explanations — all included free with every workbook. One-time purchase. No subscription, ever.
How is this different from IXL or Khan Academy?
IXL is screen-heavy and costs $79–$159/year. Khan is 100% screen. Kumon is paper too, but runs $150+ a month with no instant scoring. 15Q20M is a paper workbook with instant digital scoring. And unlike scoring systems that reviewers frequently report can tank a score over a single mistake, 15Q20M never drops a score for a wrong answer. It's 15 problems, then it's done.
What happens when my child gets a problem wrong?
They get a step-by-step explanation right in the app, then a free practice twin — a new problem testing the same skill — so they can try again before moving on. 1,200 twins per grade, included with every workbook. Never an upsell.
Is this a full curriculum?
No — and that’s by design. 15Q20M builds fluency on concepts your child has already learned at school. When your child gets an answer wrong, the app shows a step-by-step explanation. You never need to teach.
I can’t help with Common Core math. Will this work?
You don’t need to teach anything. Your child solves independently on paper, the app grades instantly, and wrong answers get step-by-step explanations. You just check the dashboard.
Is the QR/app setup complicated?
No app download for kids. They scan the QR on the page, the timer starts, and they enter answers — about two minutes, and they're done.

One session a day.
Real progress in 80 days.

Day 80. Last page turned. That's not a grade. That's a habit.

$14.99 per grade

No subscription. Ever.

8 out of 10 EdTech platforms charge $80–$399/year — 63% of parents want to cancel one right now (NerdWallet).

Ages 9-10

Grade 4

80 days · 1,200 problems

Ages 10-11

Grade 5

80 days · 1,200 problems

Ages 11-12

Grade 6

80 days · 1,200 problems

Get the workbookTry free sample day
Paperback · 180 pages·8.5 × 11·Black & white interior·Available on Amazon