Four arithmetic operations from Wikipedia encounter this time we will discuss the implications of the four arithmetic of natural numbers. Mathematical understanding of each account from beginning to sense the action and its relation to reality, in other words, what kind of action appropriate invoicing solution ig mail to various problems in reality. When early learning children see how different ig mail situations lead to the same solution and how it represents the exercise various problems are able to access a variety of problem-solving efficiency, security and understanding.
Sight textbooks and notebooks for students in elementary ig mail school I think that the standard assumption that Math is a technical ig mail solution of exercises. While this is important and useful, but calculators and computers do it faster, more efficiently and without error. - The most important skill rather neglected is the ability to problem in natural language, understand the redundant information and is not relevant and what information you need and what information is missing and then figure out what exercise or what series of exercises ig mail that formulate and solve to reach a solution (or that there is more than one solution or no solution ) - Sometimes there is more than one way to solve then it is necessary to assess the context effective method that will bring a good and successful solution. Students should learn to think. Students should be able to also come up with suitable problems and solve them.
There is room 4 people: two adults and other children. How many children?
Children learn to find the numerical relations between ig mail the items, the ratio between full-time, ig mail the separation of a number of its components and the assembly of a number of its components. This separation will provide for the operation of subtraction and thinking sorts. Children learn to formulate sets of ratios and write them a sketch of the whole and its parts, to translate a sketch to a given situation and vice versa. They learn that there are several aspects of the same phenomenon, the completion of a number 10 and other numbers (base enrichment border crossing and equations).
Parent: School Exercises You've seen a lot of connection, sometimes there are stories. There is a conclusion that matches what we've seen here and from what you have seen and heard at school?
Child: In the first story joined a group of birds on the ground two more birds, while the second story from the beginning it seemed that the birds were in the same group.
In combination is a dynamic connection state change: Three birds resting on the ground ig mail and the two joined. Some have now? In combination expresses a static connection types distribution: three Hoopoe picture and two parrots. Some birds picture altogether? Teacher has called ig mail the film dynamic connection while the connection call static image.
Grade children present both face of the connection: Connecting to add (different numbers) and connection as a count (pure numbers). Children learn to rely on a definition of arithmetic operation to create stories. They learn to rely on pictorial data (in addition to the other information in the hands of illustration) to enjoy stories and translate them into account represent arithmetic and appropriate relationship diagram depicting the relationship between the whole and parts. We also saw a difference between connection ig mail Ssti (image) to a dynamic ig mail connection (film) in the previous example. How to share
Union of two sets, and a count of the number of elements united group - for example, collecting children two classes the school hall, and count the number of students in the group together, from the beginning of one group change, add to another organ - for example, the transfer of one class to the other class room one by one. Here the share of the total number of students is the stock continued: know how the second ig mail grade students at a time and add another one at any moment another student joins
Parent: I'll tell a story about two people similar in two different cases: the uncle had 100 postcards in his collection of dolls and doll he won another. Yael was only one doll and competition is won by 100 more. What is similar and what is different from the situation of children?
Boy: like? Both at the end of the story has 101 dolls. Different? David's condition after winning is not very different from his earlier, he has a total of one doll, but Yael's ig mail condition greatly improved now that she has a lot more than a puppet before ig mail winning.
We use our exercises spare Law for convenience that there are cases where it facilitates the calculations. For example, it is easier to calculate than 2 9 +2 +9. In the first case I have to go and count "ten, eleven" and finished, while in the second case "three, four, five, ..., ten, eleven." The difference is I have to move a few steps to reach the result.
I link here to rate Workshop mathematics for students in elementary school where I taught two meanings months Subtract the countdown and subtraction of weight and presented a summary of the issue: Lesson 9: Subtract the countdown and subtraction of weight and Summary 6 meanings subtraction (of workshop math in elementary school Amal Kfar Yona, Tsha"a)
We notice the zero is also a double, and like to connect, this "same" ig mail numerical result but not the meaning. 2x3 call two times three and draw III III however, 3x2 call three times two and Painting II II II think it matters much whether taking the drug twice a day for three days or take it three times a day for two days - Is our situation be the same in both cases ? Please note illustration spare multiplication law (to be convinced that it works) is three times five xxxxx xxxxx xxxxx spin and get XXX XXX XXX XXX XXX considerable quantity is maintained even though the organization has changed. I encourage parents to carefully read the article huh - symmetry of arithmetic multiplication by Thelma crystal. There are explanations for why this is important, how to give and many examples.
* Please note that when the multiplier is a natural number, but a fraction or mixed number, we say "times" when written in X but say "A". Expand and fortify ig mail at a separate workshop on the subject later, when picking ig mail fractions. Into account, such as language (Have not we been mathematics is a language) We have multiple ig mail meanings and ambiguity we tend to lessen as the context requires. Knowledge and understanding of various meanings and experience of inventing problems
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