1, Numbers and operation symbols: List and write the commonly used numbers and operation symbols in second grade mathematics, such as numbers 0 to 9, plus sign, minus sign, multiplication sign and division sign.
2. Understanding of numbers: Introduce some basic concepts of numbers, such as integer, positive number, negative number, zero and so on, and give simple examples.
3. Arithmetic operation: Introduce the common arithmetic operations in Senior Two, including addition, subtraction, multiplication and division. Some simple calculation problems and solutions can be listed.
4. Quantitative comparison: explain how to compare sizes, guide children to master concepts such as greater than, less than and equal to, and compare them through examples.
5. Geometry: Introduce some basic geometry, such as circle, square, triangle and rectangle, which can be displayed by hand drawing.
6. Clock and Calendar: Explain how to read the time and use the calendar. You can draw a simple clock and calendar to help children understand the representation of time and date.
7. Coins and currency: Introduce some commonly used coins and currency units, such as minutes, angles, yuan and symbols of angles and minutes. Pictures can be used to show banknotes and coins of different denominations.
8. Data statistics: Guide children to understand the collection and arrangement of data, and present data in simple chart forms such as histogram or line chart.
Application of mathematics
Mathematics is a widely used subject, which has important applications in various fields. The following are some examples of the application of mathematics in different fields:
1, Natural Science: Mathematics is widely used in physical, chemical, biological and other natural science fields. For example, kinematics and mechanics in physics use mathematical models to describe and predict the motion of objects; Chemical equations and reaction rates in chemistry also depend on mathematics; The study of genetics and ecology in biology also needs mathematical modeling and data analysis.
2. Engineering technology: In the field of engineering technology, mathematics is a key tool for designing, modeling and optimizing engineering systems. For example, structural design and strength calculation in civil engineering, circuit design and signal processing in electronic engineering, orbit calculation and navigation system in aerospace engineering are all inseparable from the application of mathematics.
3. Economics: Economics is a discipline that studies resource allocation and market behavior, and mathematics plays an important role in this field. Economists use mathematical models to analyze supply and demand, market equilibrium and economic growth, and also use statistical methods to analyze and predict economic data.
4. Finance: Quantitative finance and risk management in finance depend on mathematical models and advanced statistical methods. Financial economists use mathematical formulas to price financial products such as options and derivatives, and also use mathematical models to evaluate and manage financial risks.
5. Computer science: Computer science is a field closely related to mathematics, which provides the basis for algorithm design, data structure and cryptography. For example, computer graphics, machine learning and cryptography all involve mathematical concepts and methods.