In the actual teaching, I found that the child was unwilling to recite the multiplication formula several times.
Often, when one is next to the other in sequence, it is very skilled, and you can't get a result by pulling one casually.
Therefore, many children often make mistakes when calculating multiplication and division tables.
So in teaching, how to improve children's enthusiasm and interest in reciting formulas and master them skillfully? With this question, I think hard and make various attempts in teaching.
(1) Look at the formula and understand the meaning.
When reciting formulas, let children know the origin of formulas and the basic meaning of multiplication, and let children know why and why. Don't just use the formula as a jingle.
In this way, when children really can't remember a formula, they can use the most primitive method to deduce the final result.
(2) Find the rules and memorize them skillfully.
Many of these formulas 1-9 are regular.
For example, any formula is related to two adjacent sentences.
When you can't think of five or seven, just remember five, six and thirty, and add five to get five, seven and thirty-five; Or subtract 5 from 5840 to get the formula of 57.
You can also use four seven two eight plus seven or six eight four eight minus seven to get this formula.
For another example, the 9-sentence formula of 2 is what we often say: even number, two numbers; The 9-sentence formula of "5" is our usual 5-digit number (these students were already very skilled when they knew the number within 100 in Grade One).
The multiplication formula of 9 is even more interesting, and the numbers in its formula are regular. (Our students once wrote math diary: Wonderful 9) Separate the numbers of each formula (9, 18, 27, 36, 45, 54, 63, 72, 8 1) and compare them.
Coincidentally, the formula of 9 can also be expressed by our simple "finger exercise".
(The specific expression is abbreviated)
(3) Multi-form and multi-practice.
After learning all the multiplication formulas, if children want to master them skillfully, they must read more and recite more.
However, students are bound to get bored when reading and reciting single forms. We must come up with a variety of interesting methods and use formulas flexibly so that children can recite happily and master them skillfully.
For example: recite the formula table, which can be horizontal back, vertical back, oblique back and back; The form of memorization can be memorized by yourself, by teachers and by students.
(4) Think about the object and make up children's songs.
On the basis of children's certain formulas, children can find related problems that can be multiplied in life and make up small nursery rhymes in the form of formulas.
For example, there is a numerical formula in a little nursery rhyme:
A butterfly has two beards and two butterflies have four beards.
(Memory 2 multiplication formula 2, 1 Zhou Xiaohang)
One red scarf has three corners, and two red scarves have six corners.
(Memory 3 multiplication formula 2, 1 Lu Hui-like)
One puppy has four legs and two puppies have eight legs.
(Remember Formula 2 of 4, 1 Zhang Diya of class)
Five fingers in one hand and 10 fingers in both hands.
(Memory 5 multiplication formula 2, 1 class Cheng Jiaxin)
.
Some children also add several formulas to a nursery rhyme.
A turtle has 1 head, 2 eyes and 4 feet;
Two turtles have two heads, four eyes and eight feet;
.
(recite the multiplication formula of 1, 2, 4, Sun Haoyuan, Class Two)
In short, in order for children to master multiplication formula skillfully, we must come up with various methods to encourage children to practice and lay a solid foundation for children to learn multiplication and division in the future!