Review points:
1, factor and multiple:
When reviewing, we should master the divisibility of numbers and some important concepts such as prime number and composite number, common divisor, common multiple, prime number, etc., and distinguish some easily confused concepts. These contents are the basis for studying and calculating scores in the future, and students must master them well.
2, score and meaning and nature
Review the meaning and nature of fractions, so that students can clearly know what fractions are, the relationship between fractions and division. Let students know that a fraction can represent a quantity, and when a quantity cannot be represented by an integer number of units of measurement, it can be represented by a fraction; The score can also indicate the relationship between two quantities, for example, every day is 1 week 1/7. In the review process, students should also understand the relationship between scores and integers and decimals, as well as important basic knowledge such as score unit, approximate score and general score, so as to lay a solid foundation for students to learn the calculation and application of scores in the future. In the review, we should also pay attention to cultivating students' logical thinking ability such as abstract generalization, judgment and reasoning.
3. Addition and subtraction of fractions
Pay attention to let students understand the connection and difference between addition and subtraction of fractions with the same denominator and addition and subtraction of fractions with different denominator. In addition, we should also pay attention to let students master how to calculate the mixed operation of fractions and decimals, and really improve their correct, fast, reasonable and flexible calculation ability.
4, cuboids and cubes:
When reviewing cuboids and cubes, we should not only master their physical characteristics, but also distinguish the concepts of surface area and volume according to the existing space concepts, and then do exercises. In order to let students know the length and width of three groups of rectangular faces when calculating the surface area of a cuboid, they can also add some exercises to find the area of one face or two faces for students to practice. In the review, we should properly communicate the relationship between knowledge and pay attention to the comprehensive use of knowledge to solve some simple practical problems.
5. Simple statistics
Reviewing simple statistics can help students further learn to sort out some original data, fill in simple statistical tables, look at simple statistical tables and analyze the problems explained in the tables. Through review, students can further understand the significance of averaging and learn more complicated methods of averaging.