Now it has entered the final review stage of the next semester. I will summarize all the knowledge, skills and methods of this semester into a mind map, and strive to make the learning content of this semester clear.
This picture is based on the textbook published by Beijing Normal University. It is still applicable to the users of this textbook, because the final knowledge of mathematics in primary schools is the same for six years.
The users of this picture are teachers or parents who have the ability to tutor their children.
The requirement of using this picture is to be able to read the words in the picture word by word and understand the meaning expressed.
Based on this picture, I think there are several difficulties in math learning in the second semester of senior one:
Understand the number by understanding the two-digit number, and know that the number represents different meanings in different digits (single digits, ten digits).
This is not only a preparation for knowing bigger numbers in the future, but also the basis of addition and subtraction of two-digit numbers.
The carry addition and abdication subtraction of two digits are an error-prone point this semester.
The main problems in students' calculation are: copying wrong numbers, confusing addition and subtraction, forgetting to carry forward, forgetting to abdicate, and being unskilled in oral calculation within 20 minutes.
To understand the essence of addition in various problems is to know two parts and sum; The essence of subtraction is to know the sum of one part and find the other part.
The gap of junior middle school students' mathematics ability is based on the gap of reading ability.
There will be more complicated sentences on topics below grade one. Being able to read and understand the questions word for word is the premise for students to solve problems correctly.
In the final review stage, teachers or parents should focus on the above points and use the knowledge framework provided by this picture to help students master the mathematics knowledge of this semester systematically and methodically.