From the psychological point of view, people's advanced nerve type is the physiological mechanism of temperament, and temperament is the expression of higher nervous activity type in people's psychology and behavior. Temperament is innate and not easy to change.
Your daughter may belong to the clingy type: realistic and steady; Correct, honest and ethical; Stick to the rules, think hard and move slowly, but be patient.
This is actually related to students' working habits from primary school, their proficiency in mathematics and their mastery of methods and skills. We can only improve our methods and skills,
For example:
Strengthen the teaching of mental arithmetic process, cultivate calculation ability and realize simple calculation.
Simplifiable topics are generally special, so we should pay attention to the decomposition and combination of numbers (including "complement rounding"), the training of common decimals and fractions, and the memory of special factor products, so as to improve students' simple calculation skills.
Specific method
Memorize some commonly used values.
Memorize some commonly used values and use them mutually to make the calculation high-speed and efficient. For example:
25×4= 100 125×8= 10 1/2=0.5 1/4=0.25
3/4=0.75 1/5=0.2 2/5=0.4 3/5=0.6
1/8=0. 123 3/8=0.375 5/8=0.625 7/8=0.875
Starting from this proficiency, it can be further transformed. According to 1/2=0.5, 1/20=0.05, 1/200=0.005, and according to 3/4=0.75, it can be seen that 3/40 = 0.075. ..
Memorize the product of pi and natural numbers within 10, and achieve high speed and efficiency in the calculation of circles.
For example: π=3. 14 2π=6.28.
Master arithmetic skills.
Additive commutative law, associative law, multiplicative commutative law, associative law, distributive law, properties and quotient invariance of subtraction operation. There are also the changing laws of sum, difference, product and quotient, which are the basis of simplification. For example:
1, using additive commutative law sum association law to make the operation simple.
8 17+ 169+ 183+3 1=(8 17+ 183)+( 169+3 1)= 1000+200= 1200
2. Using multiplicative commutative law and associative law, the operation is simple.
125×75×8×4= 125×8×(75×4)= 1000×300=300000
3. Use multiplication and division to make the calculation simple.
24×( 1/3+ 1/6- 1/8)=24× 1/3+24× 1/6-24× 1/8=8+4-3=9
× 16=(30- )× 16=30× 16- × 16=480-2=478
4. The inverse application of the multiplication and distribution law makes the operation simple.
4.2×0.65+4.2×0.35+4.2=4.2×(0.65+0.35+ 1)=4.2×2=8.4
5. Use the nature of subtraction to make the operation simple.
4-7/ 13-6/ 13=4-(7/ 13+6/ 13)=4- 1=3
8.79-( 1.36+ 1.79)=8.79- 1.79- 1.36=5.64
Fourth, keep in mind the order of elementary arithmetic and attach great importance to the level of problem solving.
1, check the questions well. Before calculating, carefully examine the questions to see if they can be simplified.
2. Turn off the good copying questions. Correct copying is the premise of correct calculation.
3. Close the calculation. At the beginning of calculation, observe the operation sequence first, draw what is with horizontal lines first, mark it with serial number, and check it while doing it. Reduce the calculation error.
In the teaching of calculation, we should teach students in a planned, purposeful and orderly way, master certain skills and flexibly choose calculation methods, so as to achieve high-quality and fast calculation results.