Think about it. I was still in college at that time.

Back to the topic, talking about primary school math oral problem software.

My children have been using apes to search questions until the third grade.

But since the third grade, it has been changed to the champion of size.

Mainly because of this entertaining method, my children prefer it.

Now, my language ability has also been greatly improved.

The most important thing is that it can be used for free, which is much more conscience than most educational apps on the market.