Activity objectives:
1. Let children learn more important methods through activities and learn to record initially.
2. Cultivate children's observation ability and hands-on ability.
3. Experience the life of mathematics and the fun of mathematics games.
4. Understand the relativity of more and less.
Activity preparation:
1, two eggshell dolls, a basket of toys, a bucket of water, a rag doll, an apple, a pear and a citrus.
2. Every child has a self-made balance scale and a small basket (filled with glass beads, wooden beads, plastic products, etc. ), recording paper, pen, etc.
Activity flow:
1. The teacher showed two little eggshell dolls: "Today, the teacher brought two little dolls to the children. What are they made of? These two little dolls, one is made of eggs and the other is made of eggshells. Please try to tell which one is an egg. " Ask the child to identify and tell the method. The teacher concluded: "Just now this method was called" nudge nudge ".
2. Show all kinds of toys and materials, let the children group and compare their weights in various ways. Teacher: "How can you tell its weight?" Inspire children to say: take one end, mention it, hug it and compare the weight of the object.
The teacher took out a self-made balance and said, "If you want to compare the weight of objects accurately, you can also use the method of weighing." The teacher put the wooden beads at one end of the balance and the glass beads at the other end, so that the children could observe which side was heavy and which side was light. The teacher summed up: "Glass beads are heavy, wooden beads are light, heavy ones hang down, and light ones tilt up." (Learning vocabulary: vertical and vertical)
4, children's first group operation activities-compare the weight of two objects.
(1) Let the children take out two things from the basket and compare them.
(2) Ask children to communicate the operation results with their peers.
5. The teacher shows three kinds of fruits: "Teacher, here are three kinds of fruits, apples, pears and oranges. Who is heavy and who is light? " Ask a child to say the conclusion with the teacher's balance, and the teacher will demonstrate the result on the recording paper on the blackboard. (Learning words: neither light nor heavy) 6. Children's second group of operation activities-compare the weights of three objects.
(1) Let the children take three things from the small basket.
(2) Let the children record the operation results.
Activity reflection:
This activity comes from children's life and embodies the educational concept of respecting children's development and making children the initiative of learning and the main body of activities. At the beginning of the activity, the teacher introduced the activity in the form of games and chose the life scene of seesaw, which made the children interested in comparison in a relaxed and natural atmosphere. Then, the teacher guides the children to compare familiar objects in daily life. They ask questions from different angles by comparing different objects in different forms, which stimulates children's positive thinking and exerts their creativity. The whole activity is well-designed and closely linked. Children compare the weight of objects in the process of hands-on operation, brain thinking and language expression, and experience the fun of comparing the weight of objects in various ways.