Central theme: six math units

1, addition

Simple addition

Commutative law and additive associative law

Addition related exercises

Step 2 subtract

Simple subtraction

Borrowing and not borrowing of subtraction

Subtraction related exercises

Step 3 increase

Simple multiplication concept

Understanding of multiplication table

Multiplication related exercises

Step 4 separate

Simple division concept

Basic operation of division

Related exercises of the division

5. Quantitative relationship

The concepts of "more" and "less"

Comparison of quantity and size

Solutions to mathematical problems

6. Measures

A simple understanding of time

Measurement and comparison of length

Ability to understand and compare

In this mind map, the central theme is "six units of mathematics", and each branch represents a specific learning content, such as addition, subtraction, multiplication and division, quantitative relationship, measurement and so on. Relevant learning points and exercises are listed under each branch.

Mind mapping can help students understand the structure and relationship of mathematical knowledge more clearly, and help them better master and remember the learning content. This concise and hierarchical presentation will be more easily understood and accepted by second-year students.

Mind mapping is a graphical organization tool, which can help students present their knowledge in a clearer and more organized way. When designing mind maps, you can try to add some images, colors and simple charts to make them more attractive and easier to understand.

For example, in the "addition" section, you can show the process of adding two numbers with simple diagrams, such as using icons of balls or objects to represent numbers, and demonstrate the adding process through diagrams. For subtraction, the calculation methods of borrowing and not borrowing can be expressed in a similar way, which is more convenient for students to understand these concepts through diagrams.

In addition, you can highlight each branch with different colors and add some illustrations or simple icons to make the mind map more vivid and interesting. These visual elements will attract students' attention and make them participate in learning and memory more actively.