2 1 is the antenna exercise book as interesting as calculation?

2 1 Tianjian exercise book is really interesting, which is different from calculation.

1, calculation is really interesting. There are many calculation methods, such as adding ten and breaking ten. There are many ways to start.

2, learning to think about this set of 2 1 antenna exercise books, systematic training in stages, can exercise children's mathematical thinking ability and logical ability well.

20 15 college entrance examination mathematics tucao

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