1. the teachers prepare a research source for information about the features, and the exchange of individual books, such as age, health grade 2 and grade 3 student books, high school biology and biology books in the library.
1. The teacher provides resources and information about the characteristics of each age, such as health education textbooks for Grade 2 and 3 high school biology textbooks and biology books in the library.
1. Teacher prepare sources for information about the characteristics and the exchange of different ages, such as books, school health education and secondary 2 3 upper secondary school biology textbooks And biology books in the library.