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How to evaluate the 20 15 national new curriculum standard volume 2 mathematics test questions?
20 15 national new curriculum standard volume 2 mathematics test paper has the following characteristics:

First, the difficulty of the test paper is moderate and the ability is highlighted.

20 15 new mathematics curriculum standard volume 2 (science) of the college entrance examination is closely linked to the examination outline of 20 15. The design of the whole volume is reasonable, the difficulty is moderate, the coverage is wide, and the innovation is moderate. It not only pays attention to the examination of basic knowledge and skills, but also highlights the examination of mathematical thinking and comprehensive ability. Compared with the second volume of the national new curriculum standard 20 14, the overall difficulty is similar, showing better discrimination and selectivity.

Like the second volume of the national new curriculum standard of 20 14, almost every problem in the whole volume needs some calculation to be solved, especially the problem of 18, which requires higher estimation ability after drawing the stem and leaf diagram. This is another key examination of the statistical knowledge of science volume after the college entrance examination of 20 14. Of course, the test questions not only require students to "know how to calculate", but also require students to "know how to calculate", that is, pay attention to certain strategies, methods and skills in operation. This requires strengthening the training of mathematical thinking methods in the usual review and preparation, and mastering some commonly used methods and skills.

Second, the distribution of test sites is reasonable, stable and changeable.

Compared with the second volume of the national new curriculum standard in 20 14, the most prominent change in the test center is 18, which examines the knowledge of stem and leaf diagram, mean and variance in statistics, and the topic does not require the calculation of specific values, reflecting that the college entrance examination avoids the examination of candidates' large numerical operations. Through the college entrance examination in recent two years, it is revealed that we should pay enough attention to the knowledge of correlation, linear regression and independence test in statistics in review.

Secondly, the question 17 examines the knowledge of trigonometric functions and trigonometric solutions, which reflects the variability of the college entrance examination, rather than examining the series as it did last year.

Third, the topic is reasonable, innovative and bright.

Generally speaking, the topic is reasonable, innovative and steady. Specifically, this year's examination papers No.3, No.6, 10 and 18 all reflect some new ideas and are rare good questions.