It is not difficult to learn to think in the small blue box in the second grade, and the students in the first grade can also learn to understand. Learning the second grade course in advance is conducive to cultivating the thinking of the first grade students and reducing the learning burden in the future, so the first grade students can study and think in the small blue box course of the second grade.

Learning thinking is a complete thinking development and learning system, which can effectively cultivate primary school mathematics thinking.