Goal:
1. Find the corresponding item according to the direction mark and ordinal number, or mark the direction of the specified item and indicate its position with the correct ordinal number.
2. Establish the preliminary concept of bidirectional sorting.
3. Experience the fun of the game.
Prepare:
1. The child is already familiar with the left and right positions.
2. 1~ 10 digital card, PPT (presentation), direction marker, operation sheet and pen.
Process:
Let's review the number of forward and backward songs from 1 to 10.
1. Show the digital card of 1~ 10, and review the ordinal number and reciprocal.
2. Demonstrate the PPT screen, guide the children to observe and fill in the appropriate numbers in the circle.
Second, preliminarily judge the position of the object according to the left and right directions.
1. Show PPT pictures. Let the children tell me how many apples there are.
2. Introduce the direction marks "→" and "←";
Teacher: Look, what direction does this mean? Let's show it by action.
3. Try to combine the directional marker and ordinal number to find the corresponding apple.
Teacher: Please find the fourth apple from left to right. We can use "4".
Third, try two-way sorting and positioning according to PPT pictures.
1. Determine the position of each small animal according to the directional marker and indicate it by ordinal number.
2. Find out what kind of small animal it is according to ordinal number and direction mark, such as "5" and "2".
3. According to the ordinal number indicating the position of small animals, find the corresponding direction marker.
Fourth, objects in the same position can be represented by different ordinal numbers through operations.
Operation 1: Guide children to fill in the appropriate numbers in brackets according to the direction sign, or draw the direction sign according to the ordinal number, pay attention to the methods and steps for each child to judge the direction and determine the ordinal number, and understand the strategies for children to solve problems.
Operation 2: Guide children to find and circle the corresponding carrots according to the ordinal number and direction mark, and write down the ordinal number of carrots in the opposite direction under the reverse direction mark.
Verb (abbreviation of verb) promotion activities
1. Show the operation cards completed by children in the puzzle area for children to evaluate and verify each other.
2. Expand children's sorting methods, such as before and after sorting, up and down sorting, circular sorting, etc.