The drawing method of the second unit of the first volume of the fourth grade of the mathematical thinking map is as follows:

1. First, prepare a piece of white paper and some colored pens. Draw the central theme on paper, that is, "the second unit of the first volume of the fourth grade mathematical thinking map" Around the central theme, four branch themes are drawn, namely "number and algebra", "figure and geometry", "statistics and probability" and "synthesis and practice".

2. Under the sub-theme of "Number and Algebra", three sub-themes are drawn, namely "Concept of Number", "Operation of Number" and "Formula and Equation". Under the sub-theme of "concept of number", three smaller themes are drawn, namely "reading and writing of number", "nature of number" and "rewriting of number".

3. Under the sub-theme of "number operation", draw three smaller themes, namely "addition", "subtraction" and "multiplication". Under the sub-theme of "Formulas and Equations", draw two smaller themes, "Representing Numbers with Letters" and "Simple Equations". Under the sub-theme of "graphics and geometry", draw three sub-themes, namely "graphic understanding", "measurement" and "graphic movement".

4. Under the sub-theme of "Understanding Graphics", draw three smaller themes, namely "Line and Angle", "Plane Graphics" and "Three-dimensional Graphics". Under the sub-theme of "measurement", draw three smaller themes, namely "length", "area" and "volume". Under the sub-theme of "Motion of Graphics", draw three smaller themes, namely "Translation", "Rotation" and "Symmetry".

5. Under the subtopic of "Statistics and Probability", draw two subtopics of "Statistics" and "Possibility". Under the small theme of "statistics", draw three smaller themes, namely "data collection and arrangement", "statistical chart" and "statistics". Under the sub-topic "Possibility", draw three smaller topics, namely "definite event", "uncertain event" and "calculation of possibility".

Mathematical thinking guidance

1, create a good learning environment: provide students with a quiet, bright and comfortable classroom environment and home learning environment, which will help students to stay focused and clear-headed when learning mathematics. Pay attention to basic knowledge: master basic knowledge of mathematics, such as addition, subtraction, multiplication and division, fractions, decimals, percentages, etc. This is the basis for further study.

2. Cultivate logical thinking ability: Mathematics is a highly logical subject, which requires students to have logical reasoning ability. Therefore, we should pay attention to cultivating students' logical thinking ability and learn to analyze and solve problems.