Children can make a bar graph and explore the idea of scale. Children need to choose a scale for the graph that corresponds to their survey. The scale must begin with 0, but intervals need not be 1. The scale may increase by increments of 2 or 5 or some other appropriate number. Children need to decide what will make the reading of their data the easiest. Have children survey a larger sample of people. For example, ask 25 people how many of them ate lunch at work or ate a banana that day or exercised, etc. Children can then make a more complicated bar graph with multiple answers, such as favorite sport or favorite type of music. Bar graphs can be made on centimeter grid paper.