When can you solve examples within 20
Once you have fully mastered the skills of counting to 10, it is recommended to begin activities on the second ten. All that is needed here is understanding, without prompting or copying from a neighbor. How to teach counting and explaining examples to a child within 20? You should follow the step-by-step method:
- Learn the ordinal count of the second ten, the order of each element of the number series. To facilitate memorization, use the same objects - cards, cubes. Write numbers only on the first ten units. Arrange them in rows, the first ten with signatures, and the second “blind” one under it.
- Remember according to scheme 14 - “- eleven” is added to the word four, and so on with each new term. The child must learn the meaning of the names of serial numbers from 11 to twenty.
- Start with the concept of the first ten, then add elements of the second row and pronounce the actions. “Ten plus four equals fourteen.” All data in the interval of the second ten should sound like this.
- Practice addition operations without transition. By type 10 + 6 = 16; 16 – 6 = 10. When this stage is mastered, actions of increased complexity are performed.
Puzzles for counting to 20
Examples with passing through ten require developing mental counting skills. Knowing the composition of a number when the sum is equal makes it easier to memorize the calculation algorithm for addition and subtraction within 100.
How to teach your child addition and subtraction within 10 and 20
"Adding and subtracting numbers from the first ten"
create a favorable musical microclimate,
develop children's imagination.
Technical training aids:
Tape recorder, musical accompaniment (audio recording of musical works), computer.
Equipment
: magnetic board, flannelgraph, chest, 2 swords (large and small).
Demo material
. Pictures - presentations: Ivan Tsarevich, Vasilisa - the beautiful, Baba - Yaga, Koshei the immortal, hut on chicken legs, crossroads, Koshchei's castle, three towers (for flannelgraph), caves. Reference pictures.
Handout
: cut-out pictures of “Koshey the Immortal”, simple pencils, su-jok, chips of two colors, sets of numbers and mathematical signs = + -, magnetic numbers, felt-tip pen, counting sticks, cards with two stripes.
Progress of the lesson.
Organizing time
.
Defectologist: Hello guys! Do you like fairy tales? (children's answers) Who reads fairy tales to you? (children answer) Do you think adults like fairy tales? (children's answers) Who reads fairy tales to adults? (children's answers) Today I invited guests to our place to tell them a fairy tale. Will you help me? (children's answers) Guys, do you think that if a fairy tale is told in a bad mood, it will end well? (children's answers) I want our fairy tale to end well, so what kind of mood do we need? (children's answers) Let's cheer ourselves and the guests up - look at each other, smile at each other and the guests.
Defectologist: In a certain kingdom, in a distant state, there lived Ivan Tsarevich ( showing pictures
) and Vasilisa the Beautiful (
showing pictures
). One day Vasilisa disappeared. Ivan Tsarevich grieved, grieved and went in search. But where to go, where to look? Who kidnapped Vasilisa? We will find out by completing the first task.
The defectologist invites the children to sit at the tables and take cut-out pictures
and fold them.
The children do it.
Defectologist: did you find out who it is? That's right - Koschey the immortal ( show picture
), it was he who stole Vasilisa the Beautiful.
Ivan Tsarevich was saddened and set off on a journey to look for her. He walked for a long time and came to a crossroads. There is an inscription on a roadside stone ( a sheet with a crossroads drawn is placed on a magnetic board
):
“If you go straight, you’ll fall into the wolf’s mouth; if you go to the right, you’ll end up in a swamp; if you go to the left, you’ll find the beautiful Vasilisa.”
Defectologist: Guys, who can tell me where Tsarevich Ivan needs to go? - children's answers. And who can draw on a piece of paper the path of Ivan the Tsarevich? (one of the children goes to the board and uses a felt-tip pen to draw a path at the crossroads)
Ivan Tsarevich walked for a long time along the path you had chosen and finally came out into a forest clearing, and there stood a hut on chicken legs, the home of Baba Yaga ( show picture
). What should Ivanushka say to make the hut turn to him?
