1. Determine the central theme: In this unit, the central theme is "area". This topic can be the center of the mind map or the starting point of all other sub-topics.
2. List sub-themes: Around the theme of "area", you can list several sub-themes, such as "concept of area", "unit of area" and "area calculation of rectangle and square". These sub-topics are the second layer of mind map, and they are also directly related to the central theme.
3. Expand the details: under each sub-topic, you can continue to list more detailed contents. For example, the concept of area can include details such as definition and type, and the area calculation of rectangle and square can include details such as formula and application. Details can be the third or lower layer of mind map, which is used to further explain and illustrate the content of sub-topics.
4. Use graphics and colors: In mind mapping, graphics and colors are good tools to help memory and understanding. Various shapes, colors and fonts can be used in mind map to distinguish different themes and sub-themes, which can make mind map more vivid, interesting and easy to remember.
5. Concise and clear: When writing mind maps, try to be concise and clear, and avoid long and complicated sentences. The content of each node should be concise and try to express it with keywords or phrases.
Course content of unit 6 in the first volume of mathematics in grade three
1, the sixth unit of the first volume of the third grade mathematics includes two digits multiplied by one digit and a hundred digits multiplied by ten digits. This unit introduces how to multiply two digits by one digit, and how to multiply hundreds of digits.
2. Through some examples and exercises, let students understand the concept and calculation method of multiplying two digits by one digit. For example, by calculating "an apple costs 10 yuan, how much does it cost to buy 12", let students understand that 12 times 10 equals 120, so as to master the calculation method of multiplying two digits by one digit.
Next, the course will introduce how to multiply hundreds and dozens of numbers. Through some examples and exercises, students can master the multiplication method of percentages and tens. For example, by calculating "how much does it cost to buy 350 schoolbags from 25 yuan", let students understand that 350 times 25 equals 8750, so as to master the multiplication method of percentages and tens.
4. The course also arranges some practical activities to enable students to consolidate their knowledge through practical operation. For example, by calculating the total number of classes and schools, students can further master the multiplication method of two-digit times one-digit and hundreds of dozens of numbers.