ITerativ Tsurukame-zan Lite

株式会社光ソフトウェア HikariSoftware Inc.

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About this app

ITerativ Tsurukame calculation(Tsurukame-zan), a method of calculation based on figuring the number of cranes and turtles from the totals of their legs, is an effective math application.

ITerativ app not only asks a lot of problems randomly, but also has the feature of creating them with a different combination of numerical values.
This feature makes it meaningful that you solve them "repeatedly".
Since the combination of numerical values ​​changes every time, you cannot solve the problems by memorization. You may need to think and calculate every time to derive the answer.
By repeating this, you will be able to understand the “problem solving way.”
Math is a subject that cannot be solved by memorization.
We hope that this "repeat" learning will help your child improve his/her math skills.
School often uses books, workbooks and printed sheets as a teaching material.
When you repeat the same problems on them, they are always the same numeric values.
In this case, it is likely not an effective way to understand the “problem solving way” because you remember the answer or omit intermediate calculations in your head.
The method of "repeat" learning has been used in calculation problems for a long time, but it was difficult to apply it to word problems since then.
However, ITerativ app has succeeded in giving multiple word problems repeatedly like calculation problems by changing the numerical values.
ITerativ app will continue to provide services that help children improve their academic achievement.


This app has the following features.
① Anytime, anywhere
You can study with ITerativ app anytime, anywhere.
Use it at home, in the park, or even on the train.

② Simple screen configuration
Usually one screen is used.
The problem appears in the upper half, so you can enter the answer with the numeric keypad, symbol input buttons, etc. of the lower half.
You can also set “repeat” and add to / delete from “favorites” from this screen.

③ Favorite function
You can add problems into "Favorites".
Questions added as favorite will be shown on the Favorites screen.

Add problems that you do not understand yet or that you are not good at to your Favorites so you can study at any time!

④ Do not acquire personal information
The ITerativ app does not collect any PII (Personally Identifiable Information) such as name, address, phone number or email address.

⑤ Patent
The ITerativ app has a patent application in Japan.