Proficiency in oral and written methods of calculation depends on the assimilation of the children questions numbering numbers.In the study of this topic in each class of primary school is given a certain number of hours.As practice shows, for the development of skills it is not always enough time is provided by the program.
Realizing the importance of the issue, an experienced teacher is required to be included in each lesson exercises related to the numbering numbers.In addition, it will allow for these types of jobs, and the sequence of their presentation students.
Program Requirements In order to understand what is necessary to aspire to the teacher and his pupils, the first should clearly know the requirements put forward by the program in mathematics in general and numbering issues in particular.
- The student must be able to form any number (to understand how to do it) and call them - a requirement which relates to oral numbering.
- studying the written numbering, children must learn not only to write down the number, but also to compare them.However, they are based on knowledge of the landed value of the digit in the number of entries.
- with the concept of "discharge", "bit unit", "bit the term" children learn in second grade.Since that time the terms are entered in the active vocabulary of students.But the teacher used them in mathematics lessons in the first grade, to explore concepts.
- know the names of digits to record the number as the sum bit of terms used in practice, such a unit of account, as a dozen, a hundred, a thousand, to reproduce the sequence of any segment of the natural series of numbers - is also a requirement of the program to the knowledge of primary school pupils.
How to use job
proposed below group tasks will help the teacher to fully form the skills that will eventually lead to the desired results in the development of computer skills of students.
exercises can be used in the classroom during the oral accounts of repetition of material, at the time of learning a new.They can offer for homework in extracurricular activities.On a material exercise the teacher can organize group, frontal and individual forms of activity.
Much will depend on the arsenal of techniques and methods, which owns the teacher.However, regular use of a sequence of tasks and skills training - the main conditions that will lead to success.
form the number
The following are examples of exercises designed to perfect understanding of the formation of numbers.They are required amount will depend on the level of the class students.
- Using a drawing, tell us how the resulting number.Read it (2 hundreds and 4 dozen, 3 units).The number shows the geometric shapes, such as large and small triangles, dots.
- Record and read the number.Draw them using geometric shapes.(Teacher reads: "2 hundreds, 8 tens and 6 units." Children listen to a job, and then perform it consistently).
- continue recording the pattern.Read the numbers and draw them to the model.(4 cells. 8 units. = 4 cells. 0 decimal. 8 units. = 408; 3 cells. 4 units. = ... Hundred. ... Ten. ... U = ...).
Rename and write the number
- Exercises of this type include assignments that require call the number provided by the geometric model.
- Name of typing them on the web: 967, 473, 285, 64, 3985. What they contain units of each grade?
3. Read the text and write each cardinal numbers: seven cars transported ... one ... one thousand five hundred and twelve crates of tomatoes.How many of these vehicles will need to carry two thousand eight hundred and eight ... such as boxes?
4. Record the number of digits.The values expressed in smaller units: 8 cells.4 units.= ...;8, m = 4 cm ...;4 cells.9 decimal.= ...;4 m 9 dm = ...
read and compare numbers
1. Read aloud the numbers that consist of 41 decimal.8 units .;12 dess .;8 des.8 units .;17 des.
2. Read the number and pick them appropriate image (on the board in a column written by different numbers, and the other - in no particular order depicts patterns of these numbers, students should establish their correspondence.)
3. Compare the number: 416 ...98;199 ... 802;375 ... 474.
4. Compare the value of 35 cm to 3 m ... 6 cm;7 m 9 m 9 cm ... 3 cm
work with bit units
1. Express in different bit units 3 cells.5 dess.3 units.= ... Honeycomb.... Units.= ... Ten.... Units.
2. Fill in the table:
| model number | Units 3 digits | Unit 2 discharge | Units 1 discharge | Number |
3. Write down the number where the number 2 refers to a unit of the first category: 92;502;299;263;623;872.
4. Record your three-digit number, where the number is three hundred and units - nine.
bit sum terms
Examples of tasks:
- Read the writing on the blackboard: 480;700 + 70 + 7;408;108;400 +8;777;100 + 8;400+ 80. In the first column Arrange three-digit numbers, the amount of bit terms shall be in the second column.Connected by arrows amount with its value.
- read the number: 515;84;307;781. Replace bit sum terms.
- Write five-digit number, which will be three digit terms.Write
- six-digit number containing one bit term.
Operating big numbers
- Locate and highlight the three-digit number: 362, 7;17;107;1001;64;204;008.
- Record number to have 375 units of the first class and the second class units 79.What are the maximum and minimum bit term.
- The similar and differ among each pair of 8 and 708;7 and 707;12 and 112?
apply the new unit of account
- Read the numbers and tell me how many tens in each of them: 571;358;508;115.
- How many hundreds are in each record the number?
- Break of several groups, justifying their choice: 10;510;940;137;860;86;832.
the landed value of the digit
- From 3 digits;5;6 Make all possible three-digit numbers.Read
- number: 6;16;260;600. What figure is repeated in each of them?What does it mean?
- find similarities and differences, comparing the numbers between them: 520;526;506.
We are able to quickly and correctly considered
The job of this kind should include exercises that require a certain amount of numbers to place in ascending or descending order.You can invite children to restore the disturbed order of the numbers, insert missing, remove the extra digits.
find the values of numerical expressions
numbering Using the knowledge, students have no difficulty finding the values of expressions such as: 800 - 400;500 - 1;204 + 40. This will be useful to keep asking the children what they saw, follow the steps to ask to call them this or that bit term, draw their attention to the situation of the same numbers in number and so on. D.
Allexercises are divided into groups for ease of use.Each of these may be supplemented by a teacher at his discretion.Tasks of this kind is very rich in Mathematics.Discharge terms that help you learn about the composition of any big numbers, have a special place in the selection of tasks.
If this approach to the study of numbers and the numbering of their discharge structure will be used by teachers throughout the four years of primary school, then a positive result will necessarily be shown.Children will easily and without errors to perform arithmetic calculations of any complexity.
