Understanding of numbers
In the second grade mathematics, students need to learn the basic understanding and comparison of numbers. The following are related knowledge points:
Understanding of 1 Numbers: Grade two students need to master numbers within 20, and they need to be very skilled in the numbers from 1 to 10 in order to identify and calculate quickly.
2. Comparison of numbers: Grade two students need to use symbols greater than, less than and equal to compare numbers, and can use comparison symbols to solve some simple problems.
digital arithmetic
For sophomore students, the operation of numbers is a very important knowledge point. The following is the relevant content:
1. addition and subtraction: In the second year of mathematics, students need to learn addition and subtraction within 10, and they need to be able to express the same formula in different ways.
2. Operation order: Students need to master the order of mathematical operations, that is, multiply first, then divide, and then add and subtract. At the same time, students also need to know how to change the operation order with parentheses.
3. The concept of division: When students learn division, they need to understand the concept and significance of division and master the usage of arithmetic symbols = and/.
Extended data:
Mathematics [English: Mathematics, from ancient Greece μ? θξμα(máthēma)； Often abbreviated as math or maths], it is a discipline that studies concepts such as quantity, structure, change, space and information.
Mathematics is a universal means for human beings to strictly describe and deduce the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence. In this sense, mathematics belongs to formal science, not natural science.
Different mathematicians and philosophers have a series of views on the exact scope and definition of mathematics. Mathematics plays an irreplaceable role in the development of human history and social life, and it is also an indispensable basic tool for studying and studying modern science and technology.