In order to analytically overview trends and laws suggested by massive data, the use of graphs is indispensable. According to the new elementary school curriculum guidelines (in Japan), bar graphs starting from the third grade, line graphs, pie charts, and concepts of averages and dispersion of data on those graphs seem to be included in the learning range, so I assume that you can have a certain image of graphs.

However, traditional graphs require interpretation through visual or tactile senses, making their utilization challenging for students who primarily operate computers via screen readers, or requiring the preparation of special equipment.

Therefore, in this chapter, we will introduce the concept of audio graph (also known as graph sonification), so that everyone can easily utilize graphs. Letâ€™s learn how to use them through practice.