Second, the key and difficult points can be boldly expressed as classification standards. That is, after classification, it can be said to be classified by color or size.
Third, materials and environment create building blocks, snowflakes, wooden beads, geometric figures, etc.
Fourth, the design thought classification activity belongs to the content of pre-number education, mainly to prepare children for understanding the concept of number in the future. If children understand the actual meaning of numbers, they need to abstract the number of objects represented by a number, and the basis of abstraction is to exclude the interference of external characteristics such as shape, size and color of objects. This ability is gradually formed in the classification activities. Therefore, the purpose of small class classification activities is to enable children to form a certain generalization ability through the operation of various materials. The expression classification standard of small class children is the key and difficult point. This is because children's generalization ability is poor and their Chinese expression ability is weak. Therefore, teachers can give children appropriate hints through instructions, or they can use the method of marking to let children express their ideas first, and then learn to explain the classification standards in language.
Verb (verb's abbreviation) activity process operation experience-discussion summary-review and consolidate operation experience to provide operation materials in the activity area, so that children can accumulate perceptual experience about object characteristics such as color and size through operation and fiddling.
(1) snowflakes. Material: Snowflakes of different sizes and colors, 4-5 snowflakes of each color. Description: Please put snowflakes of the same color together.
(2) Building block material: 4-5 building blocks with different shapes, such as rectangle, square, triangle and cylinder, which are put together. Description: Please put the building blocks with the same shape together.
(3) Wood bead material: four kinds of wood beads with different shapes, 4-5 each, with different colors. Description: Please put wooden beads with the same shape together. Or: Please put the wooden beads of the same color together.
(4) Toy materials: building blocks, wooden beads and snowflakes. Description: Please put toys of the same color together.
2. After discussion and induction group discussion, help children put forward and transform the classification standard.
(1) Give each child some geometric figures with different colors, and each figure has two types: large and small. Note: Please put these graphics in two boxes, and put the same graphics in each box. Ask the children to introduce their classification results. And prove why these numbers are put together. Or you can ask other children to guess what criteria he is classified by.
(2) Guidance on children's reclassification: Just now you divided them according to the color (size) of the figure, and now you divide them in other ways.
(3) Give the child two boxes of snowflakes, each with snowflakes of different sizes and colors, and four empty boxes. Ask the children to classify two boxes of snowflakes separately and use different classification standards twice. Mark (large) and (small) after division. Then let the children prove the classification standard. Explain that markers should be known to children before class.
4. Review and consolidate other materials invested in the activity, and increase the number of each material, and continue to let children operate and learn classification.