Learning problem solving strategies in primary schools

Solving problems can not only exercise the brain, but also enrich our knowledge!

Problem-solving strategies for primary schools are as follows:

1. Drawing strategy

In the process of problem solving, the method of drawing pictures is used to draw schematic diagrams related to the meaning of the problem, and with the help of schematic diagrams to help reasoning and thinking, which is the most commonly used strategy in primary school mathematics to solve problems. Common drawing methods include: line segment diagram, collection diagram, etc.

"Translating the text of a difficult problem into a graph" can immediately clarify the idea and find a solution strategy.

2. Conversion strategy

Transformation is also a common method of problem solving in primary school mathematics, which can transform more complex problems into simple problems, and can turn unknown problems into known problems.

3. List strategy

The list strategy is also known as the enumeration strategy. It is to list the conditional information of the problem in the form of **, which is convenient for finding the problem and analyzing the quantitative relationship, so as to eliminate the interference of non-mathematical information, and at the same time, it is also convenient to find a solution to the problem.

4. Enumeration strategy

When solving some special problems, sometimes there is no way to list the equations, at this time, it is possible to list all the possible situations of the subject of the study, so that the problem can be solved relatively easily. As with the list strategy, Xinsun also needs to think in an orderly manner when enumerating, so that it can be done without duplication or omission.

5. Substitution strategy

substitution", as the name suggests, is "substitution"; "Change" naturally means "to replace". The substitution strategy is used to solve the problem of the relationship between several quantities and the total amount. The substitution strategy can simplify the relationship between two quantities and the total amount of the slip chain to one relationship between quantity and total, which is helpful to solve the problem.

6. Reverse thrust strategy

Reverse inference, that is, "reverse back, reverse past" inference, also known as backward deduction method, reduction method. It is to start from the outcome of the event, and go backwards to imagine what it was like in the first place. When we know the state of the "now" and want to seek the "original", we can often use the backward strategy to help us think.

With the same knowledge content, different understanding angles, and different ways of thinking, the problem-solving strategies chosen will also be different. We usually need to grasp as many strategies as possible to solve problems, and flexibly judge and select relevant strategies for comprehensive use when encountering specific problems, so as to improve our problem-solving ability and improve our problem-solving efficiency.

It is known that the unit price of volleyball is 1 of basketball, 3, let the unit price of volleyball be x, ** of basketball is 3x, and let the equation 3x+8x=330

11x=330

x=303x=3 times 30=90 The unit price of basketball is 90 yuan, and the unit price of volleyball is 30 yuan.

A large generation of 3 sachets in the middle of the generation 2 can be divided into 4 sachets, 3 plus 4 plus 3 is a total of 10 sachets, 200 divided by 10 with 10 20 kg per sachet.