In fact, from recognizing numbers to comparing numbers, it is always a process of abstracting concrete objects into mathematical symbols. Therefore, children learn abstract comparative size, first of all, let them know the relationship between more and less specific objects.

When children are skilled at counting and singing, they can be told that the front number is smaller than the back number, and the back number is larger than the front number.

Borrow a digital watch. According to the number table, judge which numbers are in the front and which numbers are in the back. The number in the front is small and the number in the back is large.

Ten-way memory formula:

19 19 years of good friends,

Hand in hand,

3737 is so close,

Let's go together, four, four, six, six.

Make a pair of hands in half.

One plus nine, ten tadpoles,

Two plus eight, ten old ducks,

Three plus seven, ten old hens,

Four plus six, ten golden monkeys,

Five plus five, ten big tigers.

See 9 and think of 1,

See 8, think of 2,

Seeing 7 and thinking of 3,

See 6, think of 4.

See Osuka decimal,

Switch these two figures first.