"Where are your legs?". He will show, and you will say:
"Kolya has two legs!" - and add: "Here is one and here is the second." So you and the child will begin to study the account from one to two.
The most universal manual for teaching math is fingers. Start with one handle. Recalculate your fingers, hide a few and count how much is left. Hide everything and get acquainted with the concept of zero. Separate one finger from the others and find out that five are one and four, two and three. Then add the second pen. One finger of the left hand came to visit the fingers of the right, and six fingers became. Then came another, and there were seven, and so on.
Recalculate everything that you play: "Here lives a hen, and here - two elephants". Or ask: "How many animals will travel by train?" And you yourself say that the kid began to understand how to answer this question: "Two cats, three horses, one camel, etc." Create situations where the child should something to count or give another toy or person the right amount of flowers, apples - anything.
Immediately, in the game, you can give elements of mathematical actions, introduce the composition of the number. That is, you act out the task in your faces and solve it yourself in front of the child. For example: "An elephant came to the camel to visit the ship, and then two more monkeys. And the camel had three guests "or" The girl baked two pies with jam and two with cabbage, folded all four pies into a basket and went into the woods to a familiar lumberjack (all of this you play with toys or together play with roles). The woodcutter was visited by two hunters. The girl made tea, and they began to drink it with pies. And it turned out that everyone got one pie. Since there were four people and pies, it was equal. Do not focus the child's attention on what you need to count, remember or listen. Let the child be carried away by the game, and everything will be remembered by itself. Do not be afraid to give the concept of multiplication and division: we built three houses of four cubes - only twelve cubes gone! Let's divide the six animals into three animals, two for each!