Teachers' correcting homework helps students to develop good writing habits, rigorous and serious attitude and the spirit of independent thinking and overcoming difficulties, standardize mathematics teaching in primary schools in our district and further strengthen teaching management.
Basic introduction:
Oral calculation is also satisfactory calculation, which is a calculation method and way that relies directly on memory, thinking and language without using calculation tools. It is fast and flexible. Oral arithmetic is the basis and guarantee of all kinds of addition and subtraction operations. It can be said that all future addition and subtraction calculations are based on addition and subtraction within 20.
The new mathematics curriculum standard clearly puts forward that children in grade 1-3 "can skillfully calculate addition and subtraction within 20 and multiplication and division in the table, and can calculate addition and subtraction within 100", and there are similar requirements for senior students.
The most common basis of oral arithmetic is "rounding" in the sense of numbers. Students first experience data simplification in the process of oral calculation, and the premise of simplification is "rounding" in the data, which can quickly search and integrate in their minds on the basis of daily oral calculation. At the beginning, we should insist on oral arithmetic training every day in our daily life, which can be at home.