these courses are  designed for the second year physics and chemistry in terms to prepare  their exam of the second semester

   A lot of presentations, reports and newspaper articles especially in science and technology issues contain graphs, tables or charts.  They are used to visually represent data in the same proportion as the numerical data in a table.

   During a presentation or even in a report, a graph or a chart is normally accompanied by an explanation of how to interpret the data. In the following exercises you will find some expressions frequently used in the description of graphs and charts. Find out what their meaning is and you will be able to use them next time you have a presentation or you need to write a report.