The relationship between the test sites of mathematics chapters learned in the second volume of the fourth grade is especially suitable to be expressed by mind map; First of all, let's follow George W. Yi Song to review the general contents of each chapter (as follows):

In the fourth grade, you need to learn nine units and one or four operations; The second is the object of observation; The third is the operation law; Fourth, the meaning and nature of decimals; The fifth is a triangle; Sixth, addition and subtraction of decimals; Seventh, the movement of graphics; Eight is the average value and bar chart; Nine is the wide angle of mathematics-chickens and rabbits in the same cage;

For example, the four operations in the first unit are mainly to understand the operational relationship of the four parts: (1) addition and subtraction; (1) multiplication and division operation; (3) Operation on 0; (4) Operation with brackets; General test questions are calculation or oral calculation, of course, there are also application questions, mainly using the operation order of elementary arithmetic to solve real life cases such as chartering;

Next, Xiao Song will launch a "Mind Map List of Unit 4 Mathematics 1-9", hoping to help the students!

Mathematics knowledge test sites are different from Chinese test sites, and mathematics is more logical. Therefore, if a good mathematical mind map can make students understand the relationship between all test sites quickly and simply, it is very suitable for test site review.

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