Catch it: Outsmart Your Math Mistakes

Release date TBA, later in 2026 – follow the announcements!

A course that teaches your child to catch their own mistakes

Your child knows how to solve the problem — but the answer written on the page is still wrong. The 38 becomes 83. The carried 1 disappears. A minus sign goes unnoticed. These slips can be especially common in children who struggle with attention or written math, including some children with dyscalculia (often called “math dyslexia”), dyslexia, or ADHD — and the course is suitable whether or not a child has a diagnosis. When these mistakes happen again and again, a child may begin to doubt their ability, even though they understand the math.

This course does not diagnose or treat dyscalculia, dyslexia, or ADHD — no course can. Its purpose is to give children practical tools for noticing, catching, and correcting the mistakes they make most often. And you will not have to take the improvement on faith: two matched paper hunts — The First Hunt before the course, The Big Hunt after, the same kinds of lines with fresh numbers — will show it to you in black and white, line by line. The six most common error patterns become six named villains; your child learns five short checking moves that combine into one 20-second check; and Kiwi — a small flightless bird and the course companion — makes mistakes joyfully and, being a bird in a course called CATCH IT, absolutely loves being caught. Here a found mistake is a win — the house phrase is “Good catch!” The word “careless” is never used, and timers do not exist.

Who this course is for — and what they will learn

Ages 8–13 · Grades 3–8. Designed for children who struggle with accuracy or attention in written math — with or without a diagnosis — and equally suitable for any child who knows the math but keeps writing wrong answers. Addition and subtraction within 100 is enough: the arithmetic deliberately sits below your child’s level, because the skill being learned is checking, not calculating. One honest boundary: if your child’s main struggle is memorizing math facts — times tables that will not stick — that is a memory pattern, not a checking pattern, and a different course serves it better (see our Multiplication Codes). CATCH IT is for the child whose answers go wrong on the way to the page.

Your child will learn to:

• recognize the six most common error patterns — each one has a villain’s name;
• run a 20-second check built from five short moves (every practice page lives inside the course);
• find their personal top-two patterns — their signature — and build a pocket check card for exactly those;
• treat a found mistake as a win.

The course opens with a free video for parents — because the biggest change happens at home. When adults understand that these slips are connected to how a child processes information, the word “careless” can retire — catches are praised, mistakes are no longer hidden, and the child can begin learning to find and correct them. After that, your child works independently, although sitting nearby is always welcome.

What is included

• 1 free video lesson for parents: what these slips look like on a math page, where they come from, and how the course works
• 9 short video lessons for the student
• 27 auto-checked online hunts — find Kiwi’s mistakes and fix them; every answer gets an instant cheerful message from Kiwi (“Good catch — I fix it!”)
• 9 printable mission sheets with paper puzzles — and the second page of every mission is Kiwi’s Puzzle Page: a classic logic puzzle, a different kind each time, sharpening attention and logic. These are written for the student but made for the whole family — parents are warmly invited to solve alongside
• an answer key to all nine missions — for parents
• a day-by-day family schedule — one small sitting a day, because for attention, a short daily rhythm works better than one long weekly session; also free to download
• two printable checks — The First Hunt before the course (free to download, with a parent key that scores it in minutes and tells you what the result means) and The Big Hunt after the last lesson — plus the Detective Report that sets them side by side, so growth is visible
• a pocket check card and the Detective Certificate — made to be framed

Practice without grades — and your part in it

Hunts are practice, and the course checks them automatically. After every answer, Kiwi replies right away — “Good catch — I fix it!” Your child can retry any hunt as many times as they like. There are no timers and no scores.

The first video is for parents: what these slips look like on a math page, and how the course improves them. The next nine videos are for the student — and each one starts a simple three-day rhythm:

• Day 1: watch the lesson and do the first auto-checked quiz, the same day — the parent watches the video alongside, or simply sits nearby;
• Day 2: the second auto-checked quiz, plus the paper mission — this is the parent’s listening day;
• Day 3: the third auto-checked quiz only — a short day on purpose.

Then the rhythm repeats: new video and quiz, quiz and mission, quiz. The move returns three days in a row, just before it would be forgotten — that is how it becomes a habit. Two lessons a week means about six weeks at the suggested pace. Finishing all three quizzes opens the next lesson, and the next lesson can wait for days or weeks: no child is ever behind, and children are never ranked or compared.

One honest thing before you enrol: this course works only if a parent takes part — a few minutes a day, no teaching needed. Your part is simple:

• print the paper sheets;
• put The First Hunt away, unscored, until the last week;
• listen when your child plays the say-aloud games — your ear is the checker;
• fall into your child’s traps with joy;
• praise the catches, not the answers: “Good catch!”

Checking the missions is easy. Each puzzle prints its check right on the sheet — for example, “exactly 15 sixes hide in this field,” so your child can confirm the count alone. The say-aloud games are checked by listening. And if a puzzle is ever disputed at the kitchen table, the answer key settles it. The videos and hunts do the teaching; your part is to print, listen, and cheer.

Founding-family price

Available for the first two weeks after the course goes active. Follow the announcements!

Course access and sibling accounts

Once purchased, the course remains available for as long as it is hosted online — your child may pause, return, and repeat at any time. Each child receives an individual account, progress record, and certificate. After one child enrols, additional children in the same family receive their own account at 90% off the regular course price.

Try it before you enroll — this part is free

You can find out whether this course fits your child and your family before paying anything. Five steps:

1. Watch the free parent video — what these slips look like on a math page, and how the course improves them.
2. Print the free First Hunt and give it to your child as what it looks like: Kiwi’s solved math test, with mistakes to find. Ten to fifteen minutes, no clock.
3. Score it later, without your child, using the parent key. It lists every line with its correct answer and mistake type, then tells you plainly what the score means — including the honest case where your child may not need this course at all.
4. If the course would help — open the free family schedule and ask the honest family question: can we keep one small sitting a day for about six weeks, with a parent who prints the sheets and listens to the say-aloud games? The course works when the answer is yes.
5. Then enrol, if you wish. Lesson 1 and its first hunt are also free, so your child can meet Kiwi online before you decide.