Why can't BBK tutor s 1 pro teach mathematics?

Need to clear data.

1, open the system settings of BBK tutor s 1pro tutor.

2. Click Application.

3. All, find and download the mathematics of Jiangsu Education Edition, click Clear Data, and then return to the main interface to open it to solve the problem that it can't be opened.

The Teaching Design of "How much is one number compared with the other" in the first grade mathematics of People's Education Press.

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