Interaction Analysis
Generally speaking, a ruler is used to measure length and draw straight lines. It also can regulate the direction of lines. These are its two main functions.
We also found that the referee in the long jump competition, when he measuring the results of the competitors, not only need to measure the length but also need to make sure that they have jumped within the specified range.
Generally speaking, a ruler is used to measure length and draw straight lines. It also can regulate the direction of lines. These are its two main functions.
We also found that the referee in the long jump competition, when he measuring the results of the competitors, not only need to measure the length but also need to make sure that they have jumped within the specified range.
