"Compulsory Education Mathematics Curriculum Standards (2022 Edition)" (hereinafter referred to as the "New Curriculum Standards") puts forward the curriculum concept of "designing curriculum content that reflects structured features" and "emphasis on the overall analysis of teaching content，Helping students build a system that reflects the essence of mathematics、Teaching suggestions for a structured mathematical knowledge system that is supportive of future learning。Under this concept，The new curriculum standards focus on adjusting the arrangement and specific content bet365 free bets course content。The structuring of course content can appropriately form the subject content into a whole，Prevent students from learning knowledge in isolation。The structured process analyzes and refines the subject essence bet365 free bets learning content，Helps promote students’ deep understanding and comprehensive mastery of knowledge。The staged characteristics of structured results also enable learning to progress layer by layer、Spiral advancement creates possibilities。

bet365 free bets design is one of the key factors that reflects the structuring of course content。Detailed into practice，It is to find a “leader” for bet365 free bets design，And use this as the core organizational bet365 free bets learning content，Integrate bet365 free bets content with subject knowledge、Establishing logic in the real world、Consistent and integrated structure。Big concepts are the governing facts、Converging concepts of experience and the nature of disciplines，Has the ability to reflect the essence of knowledge、Highlight the subject structure、Characteristics related to other disciplines or real world，Important value for designing structured teaching units。

　The significance of big bet365 free bets in designing structured teaching

Big concepts are conducive to integrating ideas into learning logic。There are many ways to organize course content，Follow subject development、Students’ cognitive or real-life experience orientation，Different organizational concepts constitute different types of course structures。Big concepts can integrate ideas and factors from all aspects，Integrating teaching material units and experience units，Then form a learning logic that promotes students’ understanding and transfer，Make course content as “visible” as possible。For example，People's Education Press Primary School Mathematics bet365 free bets "Understanding Large Numbers"，Teaching suggestions up to 12 hours，But by finishing、Analysis and Fusion，Can be aggregated into three major concepts for understanding and expression，That is, 1 is the basic counting bet365 free bets，Natural numbers are counted in decimal system，How many ones can be used in any number、十、Hundreds of degrees are displayed。The "Understanding of Big Numbers" bet365 free bets designed around the logic of big concepts，Achieved "replacing surface coverage of all topics in a subject area with deep coverage of a small number of topics，These small number of topics allow key concepts in the discipline to be understood”。It embodies the knowledge essence of natural numbers，Also in line with children’s cognitive rules，It is helpful for students to systematically understand the basic composition of natural numbers、The relationship between numbers and the rules of reading and writing。

Big bet365 free bets are conducive to reflecting the essence and forming a consistent sequence。Main learning topics in primary school mathematics curriculum，Arranged in three academic stages in an upward spiral，Therefore, it is particularly necessary to be guided by one or several core bet365 free bets，Throughout the entire theme，Reflecting the common essence，Constitute long-term significance、Learning task sequence of consistent features。For example，Understanding and operation of numbers，The general concept of “how many counting units” can be used as a guide，make integer、Decimal、The understanding of fractions constitutes a consistent sequence of tasks。Specifically，First stage of school，The study of numbers within ten thousand mainly allows students to understand the "meaning of numbers"，Understand the addition and subtraction of numbers in different digits，They all calculate “how many units” by adding and subtracting “ones digits”。Second stage of schooling，The focus is on learning decimal notation and fractional units，Experience integers、Decimal、Fractions are expressions that express "how many units"。The third stage of schooling，By induction、Summary，Understand the relationship between them。

Big concepts are helpful in connecting units to form the whole course。Big concepts are the core of disciplinary knowledge that can explain and predict a large range of things and phenomena，Can be used between units or even with other subject concepts、The close relationship between knowledge，Promote knowledge association。For example，The content of the "Movement of Figures" course in primary school mathematics published by the People's Education Press is arranged in three stages，Under general teaching，Students often think that learning "axisymmetric figures" is to draw the other half of the axis of symmetry，Has nothing to do with "movement"，Translation、Rotation is to draw the position after movement，The relationship between the three is ambiguous，There is a "gap" in understanding。If in "Movement of Figures"，Use "What has changed、The big concept of "what remains unchanged and how to change" governs these contents，It will allow students to better understand the relationship between the three movements，Vertically connect the units of the three academic periods into a holistic "large bet365 free bets"。

　Using big bet365 free bets to design structured teaching programs

The development of academic requirements for the new curriculum standards provides reliable standards and basis for reverse design，The teaching materials are arranged in stages according to students’ cognitive characteristics，Make the leadership of big concepts an urgent need。The following is combined with the unit "Rectangles and Squares" in the third grade of primary school mathematics，Learn from several patterns that have been formed in unit design around big concepts，Showing the framework and technology of bet365 free bets from a big concept perspective。

First，Determine the expected results of learning。First，Determine the reference target。That is, find out the target content or words and phrases related to this bet365 free bets from the learning objectives of the new curriculum standard。The course goal corresponding to this bet365 free bets is: understanding common plane graphics，Experience the measurement process of perimeter and area of ​​plane figures，Explore how to calculate the perimeter and area of ​​a rectangle。Secondly，Understand big concepts。bet365 free bets design in progress，Except teachers need to use big concepts to organize knowledge，Students also need to understand the corresponding major concepts of the bet365 free bets，Lay the foundation for a deep understanding of knowledge and transfer application。The big concepts of this bet365 free bets can be summarized into three points: understand that the essence of measurement is the accumulation of measurement units；Understanding the perimeter is a further description of the graphic characteristics；Insight into the relationship between perimeter and graphic elements，To obtain formulas and specific methods for calculating perimeter。To promote students’ understanding and application of big concepts，This bet365 free bets establishes three basic questions: Which part of the perimeter of the figure refers to？How to measure circumference？Why can the perimeter of a figure be calculated using a formula？Finally，Clear the “Four Basics” goals。The new curriculum standards are based on students’ core literacy development levels，Combined with course content，Developed academic quality standards。Therefore，Based on academic requirements and student’s prior experience，Basic knowledge and skill goals can be set，And the development requirements for basic thinking methods and activity experience。

Second，Clear and appropriate assessment evidence。bet365 free bets design from a big concept perspective requires teachers to “think like an evaluator”，Thinking about how to determine whether students have mastered the "four basics" and understood big concepts。Based on this，This bet365 free bets except the bet365 free bets volume、Workbook、Beyond self-reflection，A performance task was also designed to assess students’ level of understanding of large concepts: in a rectangular garden，Design a path from the pavilion to the fish pond，Divide the garden into two parts，The upper left part was transformed into "Taoyuan"，The lower right part was transformed into "Li Garden"。Planting peach trees in Taoyuan for one week，Planting plum trees in Li Garden for one week，The spacing between trees is the same，The total number of peach trees and plum trees are the same，means "peaches and plums all over the world"。Ask students to design one or more solutions and suggestions。Performance tasks are authentic、Characteristics of complexity and openness，Making students’ performance results multi-dimensional、Diverse features，The level of performance is also richer。To better determine students’ understanding levels，Need to use some theories and basis，A rubric describing different levels of response，For teachers to evaluate students’ task completion。

　Third，Planning bet365 free bets learning tasks。Under the guidance of the big concept of the bet365 free bets，Reorganize based on textbook content and academic situation analysis，Design the learning of the "Rectangles and Squares" bet365 free bets into an advanced process。The first stage focuses on understanding the concept of perimeter，That is, the accumulation and description of the length of a week of graphics or things。The second stage focuses on the special relationship between edges，Understand the relationship between measurement attributes and graphic elements，Thus deducing the calculation formulas of common graphics。The third stage is through migration application and evaluation activities，In-depth understanding of the nature and general significance of the perimeter of graphics。

　Fourth，Check unit design consistency。This bet365 free bets，With the help of the "reverse design" concept，Using a “top-down” design process，We also chose an effective organizer - Big Concept。But in the specific operation process，A “bottom-up” inspection process of curriculum “consistency” should also be carried out。The so-called curriculum consistency，That’s the goal of the course、Teaching、Ratings match each other，That is, after completing the unit design，Find the corresponding “evaluation basis” for each lesson’s “learning objectives”，And find the corresponding details from the expected results such as "Four Basic Goals", "Understanding Big Concepts" and "Reference Goals"，Thus allowing specific learning tasks and assessment evidence、Expected results remain highly matched，Achieve strong bet365 free bets。

(Author’s bet365 free bets: Teacher Education College, Zhejiang Normal University、Silicon Valley Primary School, Hangzhou City, Zhejiang Province)