The background of activity design is pre-school students in large classes, but students' books and learning tools are often misplaced, and the things in small schoolbags are also in a mess; Through the study of this lesson, the purpose is to cultivate students' ability to care for learning tools, and arrange their small schoolbags in an orderly way according to the size of learning tools.

moving target

1. Through students' observation, we can initially perceive the length and the length of objects. Through the operation of students, we can learn how to compare the length of objects in general, and know that long and short are compared.

2. Cultivate students' operational ability, observation ability and language expression ability.

3. Cultivate students' good habits of caring for school tools and stimulate children's interest in learning.

4. Let students realize that there is mathematics everywhere in life.

5. Develop children's logical thinking ability.

Compare the key points and difficulties in teaching with the length of several objects.

Activities to be prepared

1, twelve bags of different items.

2. Two pencils of different colors and lengths.

Teachers put forward requirements:

1, the things in the original schoolbag don't move, so put away the books and your own things.

2. Put a bag for every two people, then put the learning tools on the desktop, compare them and listen to the requirements.

3. Put the longest learning tool on the desktop into a paper bag; Then put the shortest learning tool on the desktop into the bag.

4. When there is only one learning tool left in each group, ask the students to put the remaining learning tools in the bag.

5. Put the packed schoolbag in the upper left corner of the table.

Sixth, summary.

Teaching reflection

1, through the interaction between teachers and students, most students can master the method of comparing the length of objects and compare the length of objects correctly.

Most students can tidy up their small schoolbags under the guidance of teachers, but the development of children's behavior habits can't be done in one day. In the future teaching work, we need to increase practice and repeat training.