ABSTRACT
In the early stages of primary school children are usually introduced to the way to name a given day, that is, give its date. The concept of speed is closely related to time. Speed is a measure of the rate of travel. It is expressed in metres per second or kilometres per hour. Children's ages are usually given in years and months. There are one or two problems which may arise in this connection. The move to using minutes as well as hours needs practice. It is probably best to concentrate on telling the time to the nearest five minutes at first, but there are some difficulties, especially as there are basically two ways of stating the time. One of the problems with measuring time intervals is that scientists insist that time passes at a constant rate, yet it does not feel like that in direct experience.
