Description 1 Opening a New Era…11 ① Learn to classify various objects according to given criteria. ② Learn to set one's own criteria and classify various objects accordingly. 2 Find the Enemy Within…41 ① Learn to investigate and classify data, and represent it in a table. ② Learn how to make a table when there are two items to represent, and be able to create such a table. 3 Seeking a Way to Escape…71 ① Understand what statistics are and how they are used in everyday life. ② Learn the uses of bar graphs and be able to represent investigated data as a bar graph. ③ Understand the difference between bar graphs and pictographs, and be able to draw a pictograph. 4 Escaping at the Risk of One's Life…101 ① Understand frequency distribution tables. ② Be able to use frequency distribution tables to create frequency distribution diagrams. ③ Learn about line graphs and be able to represent investigated data as a line graph. ④ Understand historical cases where statistical graphs played an important role. 5 An Unknown Threat Approaches…131 ① Understand stem-and-leaf plots and be able to represent investigated data using one. ② Learn about various types of pictographs and be able to choose the appropriate one for a given situation. 6 The Unknown Enemy Reveals Itself…161 ① Learn about histograms and understand their characteristics. ② Learn about line graphs that use a wavy break line, and be able to draw one appropriately for a given situation. ③ Understand band graphs and their characteristics. ④ Understand pie charts and their characteristics.