fill-in-the-blank question
1, read the topic carefully and completely.
2. Recall related concepts, properties, laws, formulas, rates and methods.
3, careful calculation (drawing)
4. Is there any special method?
5. Is the result the simplest (the simplest score, the simplest proportion)?
6. Unit unification: with units.
Multiple choice
1, read the topic carefully and completely.
2. Recall related concepts, properties, laws, formulas, rates and methods.
3. Exclude the impossible from the options (exclusion method)
4, calculation control (reasoning), the results can be substituted into the topic to test whether it is reasonable.
Right or wrong
1, read the topic carefully and completely.
2. Recall related concepts, properties, laws, formulas, rates and methods.
3. Specialize the problem (concretize the problem)
4. Can you come up with data and give an example to overturn the given conclusion?
5. Consider whether the limit is exceeded.
Graphic operation
1, read the questions carefully and find out the requirements.
2, recall the drawing requirements
3. Draw pictures carefully according to the practice requirements.
4. Mark relevant data and names.
Geometric problem
1. Read the questions, draw sketches and mark the conditional questions.
2, unified unit
3. Recall relevant formulas and methods (cutting, supplementing, translating and rotating; Pay attention to the equivalent changes)
Spelling:
The perimeter of the plane figure changes, while the total area remains the same.
The sum of the side lengths of three-dimensional graphics becomes smaller, the surface area becomes smaller, and the total volume remains unchanged.
Change: spell (merge), divide (separate), and distinguish who changes and who remains the same.
Cut:
The perimeter of the plane figure becomes larger, and the total area remains unchanged.
The sum of the side lengths of three-dimensional graphics increases, the surface area increases, and the total area remains unchanged.
application problem
1. Read the question carefully and make clear the meaning of the question (find out the conditions and problems).
For example, use the list method.
Plan 40 days a day 105m.
Every day 120 meters? sky
Painting: line drawing, sketch of things, etc.
2. Analyze the topic and find the mathematical relationship.
① Find the relationship between conditions and the relationship between conditions and problems.
② Method: Grasp the problem and find the conditions.
How many days? Total length (constant)? The number of meters planned every day, the total number of days planned
③ Find out the equivalence relation.
Formula law
Proportion (positive proportion, inverse proportion):
1), which two quantities are changing and which one is unchanged;
2) What is the relationship between the variable quantity and the constant quantity?
Ratio (quotient) relationship (positive ratio)
Relationship of b product (inverse proportion)
3, column calculation (or column equation calculation)
4, check
Whether (1) meets the conditions and problems.
(2) Whether equal relations are satisfied.
③ Is the calculation correct (? Equation)
(4) is the unit unified?
⑤ Rationality of the results
* Changes in shape
* pour water (add objects? Can't find the same)
5. "Have you noticed? 2"、"? 3 "or"? 2"、"? 3";
6. Focus on the unit.
Computational problem
Steps:
Step 1: Look (1) to see what operation symbols are in the problem;
(2) Look at the characteristics of the characters.
Step 2: Thinking: (1) Think about whether it can be simple and what rules can be used easily;
(2) What is the sequence of operations?
(3) Thinking about calculation methods, including calculation methods.
The third step: calculate, calculate carefully;
Step 4: Check
1, check whether the number is wrongly copied;
2. Check whether the operation symbol is correct;
3, check whether the operation method is used correctly;
4. Check whether the operation sequence is correct;
5. Check whether the calculation method is correct;
6. Check whether the calculation result is correct;
7. Check whether the counting point is correct;
8. Check whether the result is the simplest.