Authors: xu lihua et al.

Press: Nanjing University Press

Release date: May 2006-1

ISBN:97873050436 1 1

Words: 2 10000

Page number: 127

Impression number:

Version: 2

Paper: offset paper

Page number:

Product identification: 89 18 14 1

Editor's recommendation

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abstract

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Mathematics is an important basic subject. To lay a good foundation of mathematics, we should start from primary school. Mathematics knowledge in primary schools seems to have changed a lot, but from the requirements of quality education, we should pay attention to cultivating students' innovative consciousness and practical ability. In recent years, with the full implementation of quality education in primary schools, teachers, students and parents have become more and more aware of the importance of letting students who are interested in mathematics and have spare capacity learn a little Olympic Mathematics.

This book has changed the problems of too many descriptions, difficult topics and students' low interest in learning in many previous Olympic mathematics books. In the process of writing, it embodies several characteristics:

Improve and deepen on the basis of mastering the basic knowledge of the course.

Examples give detailed ideas and solutions to help students master the methods.

The topic is from easy to difficult, the level is clear, and attention should be paid to the connection with real life.

Inspire thinking, solve many problems, and there are ideas in the answers.

Some topics have open conditions, open solutions and open results, which give full play to students' imagination and creativity.

The topic of the lower grade focuses on observation, drawing a picture and measuring it, which has the characteristics of animation.

In order not to burden students too much, this book arranges three days of self-study and practice for each lecture. On the first day, I taught myself "theme analysis" and "basic refining" and did two imitation training questions; Do two consolidation training questions the next day; On the third day, do two questions to expand and improve, and study and practice every day.

catalogue

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The first lecture on the arrangement law of sequence of numbers

The second lecture on the arrangement law of graphics

The third lesson is how to count line segments.

The fourth lecture is how to count triangles.

The fifth lecture is how to count rectangles and squares.

Lecture 6 numbered graphics

Lecture 7 Classification and Counting

Lecture 8 The Mystery of Horizontal Formula

Lecture 9 The Mystery of Vertical Formula

Lecture 10 Word Formula Puzzle

Lecture 11 Calculation formula of matchstick pendulum

Lecture 12 Match sticks are arranged by numbers.

Lesson 13 Simple Reasoning

The fourteenth lecture is about the changing law of the difference between two numbers.

Chapter 15 Page numbers of books

Lesson 16 One-stroke Painting

Lecture 17 Multi-stroke and Its Application

Lesson 18 counting on the nail board

Lesson 19 cut and draw a picture

Lecture 20 Clever Calculation in Addition and Subtraction

Lecture 2 1 Match first and then sum.

Lecture 22 Defining a New Operation

Lecture 23 Understanding Binary Numbers

Lecture 24 Addition and subtraction of binary numbers

Lesson 25 Planting Trees

Lesson 26 Climbing stairs and planting trees

Lecture 27 phalanx problem

Lecture 28 Changes in perimeter

Lecture 29 Seeking Circumference Cleverly

Lecture 30 Simple Multiple Problems

Lesson 3 1 chickens and rabbits are locked together

Lecture 32 Time and Date

Lecture 33 Circulation Problems

Thirty-fourth talk about inverse problems

Lecture 35: Fill in the formula of symbol group skillfully.

Lecture 36 Maximum and Minimum Values

Lesson 37 The shortest route

Lesson 38 apples and drawers

Lecture 39 Interesting Array Diagram

Lecture 40 Clever Calculation in Multiplication

Forty-first talk about business trial skills

Lesson 42 Division and Remainder

Lesson 43 Looking for Laws from the Changes of Quantity

Lecture 44 Dividing graphics

Lecture 45 Points and Numbers in Graphs

Lecture 46: move more, make up less and get the average.

Chapter 47 Winning strategy

Lecture 48 Open-ended Questions

Lecture 49 Odd and even numbers

Lesson 50 Clever Cutting Watermelon

Lecture 5 1 on equivalent substitution

Can you cover Lesson 52?

Lesson 53 Interesting Problems in Mathematics

Lesson 54 Solving Application Problems Skillfully

Fifty-fifth lecture on multiple solutions to one problem

Reference answer

Brief introduction of the author

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abstract

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