Interpretation of fractional curriculum standard 1. The curriculum standard requires that the main contents of the section "Fraction 15. 1" in the first volume of eighth grade mathematics of People's Education Press are the concept of fraction, the meaningful conditions of fraction, the basic properties of fraction, approximate fraction, general fraction and simplest fraction. The teaching requirements of this section in Mathematics Curriculum Standard for Compulsory Education (20 1 1 version) are: 1. Understanding the concept of fraction, the conditions of its significance, and understanding fraction is an important algebraic expression, which is widely used. 2. Understand algebraic expressions with the help of real situations, and further understand the meaning of using letters to represent numbers. We can use the basic properties of fractions to divide and divide, and understand the simplest concept of fractions. Second, the interpretation of the curriculum standard is 1. For the concept of fraction, the requirement of compulsory education mathematics curriculum standard (20 1 1 version) is to understand the concept of fraction. In teaching, teachers can be guided by concrete examples. Understand the close relationship between scores and real life. 2. For the condition that the score is meaningful, according to the requirements of Mathematics Curriculum Standard for Compulsory Education (20 1 1 version), we can find the letter range when the score is meaningful. In teaching, students should understand that the denominator is not zero, not that the letters in the denominator are not zero. Learning this lesson well is to continue to learn the nature, operation and operation of fractions in the future. The discussion of the meaning of fraction paves the way for students to learn inverse proportional function in the future. So students should master it. 3. Mathematics Curriculum Standard for Compulsory Education (20 1 1 Edition) requires analogy and understanding of the basic nature of scores. Fractions and fractions are concrete and abstract, special and general. Because fractions and fractions have similar forms, they have similar properties and operations. This section introduces the concepts of basic nature, simplification, general score and simplest score of students' existing scores, and then guesses, verifies and summarizes new knowledge. 4. Requirements of Mathematics Curriculum Standard for Compulsory Education (20 1 1 version). Understand the concept of the simplest fraction. Fraction reduction and general fraction are the deformation of fractions that must be mastered in the four operations of fractions. When learning the basic properties of scores, we should train students to use the basic properties of scores flexibly, simplify and deform scores, and pave the way for simplification and general scores. In the teaching of conversion and general score, students should understand the conversion and general score of scores and the simplest score through examples. It can be judged whether a score is simplest fraction. In class, we should pay attention to the key to conversion-the key to finding common factors and general fractions-and determine the common denominator for teaching, so that students can better grasp the conversion and general fractions of fractions.
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People's Education Press-Mathematics-Grade 8 Volume I-Interpretation of Grades Curriculum Standards
Interpretation of fractional curriculum standards
First, the requirements of curriculum standards
The main contents of the section "Fraction 15. 1" in the first volume of eighth grade mathematics published by People's Education Press are the concept of fraction, the meaningful conditions of fraction, its basic properties, transformation, general fraction, simplest fraction and so on.
1. Understand the concept of fractions and the conditions for meaningful fractions. Comprehension fraction is an important algebraic expression and has a wide range of applications.
2. Understand algebraic expressions with the help of real situations, and further understand the meaning of using letters to represent numbers.
3. Analogue the basic nature of the fraction, understand the basic nature of the fraction, use the basic nature of the fraction to simplify and divide, and understand the concept of the simplest fraction.