This week, I taught the children the history of books. This course involves many activities and the teaching time is tight. Therefore, we need to consider time in teaching design and material preparation. So I considered three points when designing activities. One is to let every child experience the writing and binding of every material as much as possible, the other is to make rational use of teaching time, and the third is to simplify the preparation of experimental materials by teachers as much as possible. There are two main activities in this class, one is to experience writing and the other is to bind books.

? In the teaching process, I found that bamboo slips are written in ink, which is very obvious after cleaning, difficult to reuse and a waste of materials. At the same time, when teaching in multiple parallel classes, the time for preparing teaching AIDS is limited. Therefore, after trying a variety of inks such as special pen ink and erasable ink, I chose whiteboard pen ink as writing ink. When writing with this ink, the handwriting left after cleaning is relatively light, which does not affect the second use. Teachers can also draw a number of 2X2cm squares on bamboo with markers. If each student only writes three words, it can meet the needs of a large number of classes.

Bookbinding activities, bamboo slips binding is a difficult point, first of all, through the micro-course "Bookbinding" to give guidance. Then, with the help of the detail map, the key steps are sorted out. According to the teaching staff, clay tablets cannot be bound. For long-term preservation, many clay tablets are put in special ceramic book boxes, or they can be dried and fired. So the clay tablet I used for demonstration was dry.

Whether the three materials are easy to write and bind is something that children can intuitively feel in this class. Whether printing is convenient, reading is convenient, carrying is convenient, it is not easy to be damaged, it is waterproof, and it is easy to get materials, all of which need to be guided by the usual life experience in the discussion. These characteristics, children can say some more or less. Children can judge whether it is convenient to carry and read, and it can be said that it is not convenient to turn pages. Deeper thinking depends on the guidance of teachers. So I referred to the method of a teacher in an excellent class. She chose "thousands of words" as the material, and presented the same content with three materials. Through comics, data and scenario simulation, under fair conditions, I compared the volume and weight differences of three materials when presenting the same content, whether it is easy to carry and read, and let children intuitively feel the amount of information that paper can record, as well as the advantages of volume and weight. The second-grade children have no idea of how many grams, and they need the teacher to make an analogy with objects in life.

The last question of the seminar: What can we get from the change of materials for making books? Some children can see that technology is developing, materials are innovating, and life is becoming more and more convenient. What guided me was the students' answers. With the progress of technology, not only books, but also materials for making other articles are constantly changing and improving, which is convenient for people's life and study.