Sort the numbers
A Math learning game for primary school, Grade 1 to Grade 6
Sort the numbers: even or odd, greater or smaller than a number, products, fractions and halves, and angles.
The Android app is on Cafe Bazaar and Myket, Iran's app stores. Anywhere else, play the online version in any browser.
Number Store is part of the Nikipoo School app, alongside 85 other games. The game is in Persian.
Toss every card into its right basket. The wrong basket flashes red for a moment and the card stays put so the child can think again — sorting is the foundation of understanding a concept.
Sorting, before any definition, is how a child's mind builds a concept. In Number Store, the child tosses each card into its right basket: round or cornered, even or odd, smaller or greater than five thousand, true or false. The game's ladder climbs to harder concepts: multiples of three or five in grade 4, simple fractions and common factors in grade 5, and in grade 6, prime or composite, divisibility by three and nine, and multiplying and dividing by a number less than one.
For a child to say a number is even or prime, they need to recognize a category's shared feature and test it against a new example. This process is exactly how a concept forms. Every card is a small test of the definition the child has built in their mind.
Levels like “look at the ones digit” and “only the ones digit matters” teach the child that to tell whether a five-digit number is even or odd, they only need to look at the last digit. Knowing which part matters and which can be ignored is an efficient problem-solving strategy.
In “judge the big product” or “multiplying by less than one,” the child has to judge whether a calculation is correct using estimation and logic, not by carrying it out in full — for example, realizing that multiplying by a number less than one makes the result smaller. This habit of smart double-checking also helps on exams.
If a card lands in the wrong basket, the basket just flashes red for a moment and the card returns to its place. Nothing is lost and the game doesn't stop. The child gets a chance to reconsider their reasoning. This experience practices tolerating small setbacks and returning to the thought.
A tip for parentsWhile adding up groceries, ask the child to sort the prices into two groups: under fifty thousand tomans and over it, or even and odd numbers. For older grades, sort the page numbers of a book by divisibility by three.
Level titles are listed in the order the child plays them — from easy to hard, following the school textbook.
Grade 1100 levels
Grade 2135 levels
Grade 3120 levels
Grade 4120 levels
Grade 5130 levels
Grade 6100 levels
Number Diver
Hunt numbers in the ocean depths
Math Bubbles
Pop the bubble with the right answer!
Hungry Croc
Teach the croc bigger and smaller
Quick & Sharp
Calculate fast, tap sharp — friends of ten, times tables and percent
Daily 10: Math
Ten mental-math questions every day, matched to your child's grade
Number Train
Arrange numbers smallest to largest, or the other way
Rescue Helicopter
Find the number, rescue it!
Number Pairs
Find the matching number pairs
Open Nikipoo School — Number Store and 85 other games are waiting for you.
The Android app is on Cafe Bazaar and Myket, Iran's app stores. Anywhere else, play the online version in any browser.
Nikipoo School
