得到的最后一个版本 Abacus Lesson - ADD and SUB - 从 Education 对于 Android. An abacus is named "Soroban" in Japan. Do you know what an abacus is? The abacus is very simple calculator used in China, Japan, Korea and so on. Some people may say... 阅读详细信息.
Abacus Lesson - ADD and SUB - com.hirokuma.sorobanlesson 应用程序详细信息
最新 Abacus Lesson - ADD and SUB - apk 下载. An abacus is named "Soroban" in Japan. Do you know what an abacus is? The abacus is very simple calculator used in China, Japan, Korea and so on. Some people may say "Isn't it an unnecessary tool if you have a calculator such as a smartphone?". Answer would be "No".
The biggest difference between electric calculators and the abacus is whether you need to hold it in your hand when calculating. Because of its simplicity, you will be able to easily use the abacus in your mind.
Imagine that you can use calculations of about 3 digits in your life without physical tools.
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