A, geometry:
Graphic classification: circle, triangle, rectangle, square, trapezoid, parallelogram, etc.
Graphic features: the nature, edge, angle, symmetry and other features of various graphics.
Graphic transformation: geometric transformation such as translation, rotation and flip.
Second, the size and measurement:
Length measurement: conversion between centimeters and meters, understanding and comparison of length units.
Weight and capacity: conversion and comparison of kilograms, grams, liters and milliliters.
Temperature and time: the relationship between degrees Celsius and degrees Fahrenheit, the calculation and conversion of time.
Third, the organizational structure of mind mapping:
Central theme: the core theme of the unit, which may be "geometry" or "size and measurement".
Branch details: the specific contents of various graphs or size measurements are listed under the core theme, such as the characteristics, properties, related formulas and conversion methods of graphs.
Related knowledge points: connect different knowledge points, such as the conversion and connection between length, weight and capacity.
Four, tips and precautions:
Key words and concepts: list the key concepts of each topic, such as the diameter, perimeter and area of a circle.
Illustrations and examples: illustrations can be inserted for understanding, and application scenarios of various concepts can be illustrated by examples.
Practical application: For example, in terms of size and measurement, we can list real-life application scenarios, such as shopping weighing, looking at thermometers, measuring rooms and so on. Make it easier for students to understand and remember.
Making mind maps can help students understand the context and connection of knowledge points more clearly and deepen their impression of important concepts. Attention should be paid to the hierarchical structure, graphic collocation and clear and easy-to-understand expression of mind map, so that students can master and apply these mathematical knowledge more easily.