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Abstract: This is an experimental study on the formation of conception of numbers in pre-school children. The experimental results obtained indicate:1. The development of the counting ability is related to the formation of the conception of numbers, but the ability of counting numbers is not the same as the formation of number-conception.2. It is possible for 3—4 year old children to grasp the conception of number of certain amount and on a certain level.3. The formation of number-conception begins in oral number counting. The steps are; (a) oral number counting; (b) number counting of objects; (c) giving the total sum by number counting; (d) being able to pick the same number of objects as what the experimenter has shown in model illustration; (e) being able to pick the number of objects as prescribed by the experimenter.4. The processes of the formation of number-conception consists of (a) from repeating the sounds of sequences of numbers to the understanding of its meaning; (b) from discriminating the numbers to the use of them; (c) from forming the ideas of numbers to the conception of numbers.

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