Kulikova E.N., Rusakov A.A. Entertaining cards. IQ trainers. Mathematics 2. Geese. Counting within 20

Adding and subtracting numbers within 20 (colored side of the cards).

Select a card with a schematic model from the stack.

Familiarize yourself with the contents of the card.

Ask the child to find the value of the numerical expression using the schematic model.

The child can check the correctness of the answer by matching the second half of the card.

Examine the mathematical notation on the right half and suggest that the child construct mathematical reasoning based on this notation.

It is recommended to master counting within 20 in stages: 1. Addition and subtraction with round numbers. 2. Addition and subtraction without crossing the ten. 3. Addition and subtraction with crossing the ten.

Practicing mental arithmetic skills (black-and-white side of the cards).

Take any card with a numerical expression and find the value of the expression.

From the remaining cards, select a card with the same numerical expression value.

The stripes on the cards will help verify the correctness of the answer.

Four test cards are provided to reinforce the learning material.

Brief theory in diagrams and tables will help successfully complete the tasks.

Games with the cards will help the child learn to count quickly and accurately within 20, and to memorize basic arithmetic rules.