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"Fractions and Division" The meaning of fractions PPT
Part One: Classroom Introduction
1. Observe, compare and understand the relationship between fractions and division based on specific situations.
2. Understand the use of fractions to express the quotient of dividing two numbers.
3. Experience that mathematics is closely related to daily life, and realize that many practical problems can be solved with the help of fractions.
Fractions and division PPT, part 2: exploration of new knowledge
Let's see who has the fastest reaction?
28÷4= 2÷10=
6÷4= 0.4÷2=
9÷10=
If 1 cake is divided equally between 2 children, how many cakes can each person get? How to list the formula?
1÷2=1/2(pieces)
If you divide 7 cakes equally among 3 classmates, how many pieces will each person get? How to list the formula?
Group cooperative learning requirements
1. Students in each group divide work and cooperate;
2. Use 7 circles to represent 7 cakes, draw them one by one and divide them one by one;
3. What conclusions were drawn from the group summary?
Fractions and Division PPT, Part 3: Class Summary
Improper fractionalization of mixed numbers:
The denominator remains unchanged, the integer obtained by dividing the numerator by the denominator is the integer part of the mixed fraction, and the remainder is used as the numerator.
Convert improper fractions to mixed fractions:
The denominator remains unchanged, and the product of the integer part and the denominator is added to the sum of the original numerators as the numerator.
Fractions and division PPT, Part 4: Classroom exercises
1. Express the quotient of the following divisions as a fraction:
(1)3÷2 = ( )
(2) 2÷9 = ( )
(3)7÷8 = ( )
(4)5÷12 = ( )
2. Column calculation:
Divide a 4 square meter round flower bed into 5 pieces of the same size. How many square meters is each piece? (Expressed as a fraction)
4÷5＝4/5 (square meters)
Answer: Each piece is 4/5 square meters.
Fractions and Division PPT, Part 5: Classwork
1. Decide whether the following questions are correct or not
(1)9÷16=1/16 ( )
(2)10/13=13÷10 ( )
(3) Distribute 3 mooncakes to 5 people, and each person will get a mooncake. ( )
(4) The numerator is equivalent to the divisor, and the denominator is equivalent to the dividend. ( )
2. Convert the following improper fractions into integers or mixed numbers.
4/3 18/3 13/9 42/6
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"Fractions and Division" PPT download of the meaning of fractions:
"Fractions and Division" PPT Download of the Meaning of Fractions Part One: Exploring New Knowledge If 1 piece of cake is divided equally between 2 children, how many pieces of cake can each person get? What if 7 pieces of cake were divided equally among 3 children? Can be calculated by division, 12, 73, points...
"Fractions and Division" PPT courseware on the meaning of fractions (Lesson 2):
"Fractions and Division" The Meaning of Fractions PPT Courseware (Lesson 2) Part One: Learning Objectives 1. Review the relationship between fractions and division, be able to use fractions to express the quotient of dividing two numbers, and solve related practical problems. 2. Cultivate observation, comparison, abstraction, generalization, etc..
"Fractions and Division" PPT courseware on the meaning of fractions (Lesson 1):
"Fractions and Division" The Meaning of Fractions PPT Courseware (Lesson 1) Part One Content: Learning Objectives 1. Understand the relationship between fractions and division. 2. Use the relationship between fractions and division to explore the arithmetic of conversion of improper fractions and mixed numbers, and be able to perform conversion correctly. Key points to understand..