I. Activity objectives:
1. Let children explore and understand odd and even numbers freely through games.
2. Cultivate children's ability to find even and odd numbers from things around them.
Second, the focus of activities:
Understand the basic meaning of odd and even numbers.
Third, the activity preparation:
Operation sheet, digital card, PPT, a wall chart, Chinese phrase cards with even and odd numbers.
Fourth, the activity process:
1, Explore Odd and Even Numbers-Game "Find Friends"
(1) Today, the teacher brought many apples, including green apples and red apples. They all want to find a good friend. ; The case comes from: Kaoba Youshi. com; Now the teacher wants the children to help them find good friends and make two good friends to see if they can all find good friends. The teacher demonstrated first, and then let the children operate on the stage.
(2) Teachers and students test whether the child's operation is correct through PPT.
(3) Let's classify the numbers that can find good friends completely and the numbers that can't find good friends.
(4) Summary: The number of apples that two people can find good friends is 2, 4, 6, 8,10 respectively; The number of apples that can't all find good friends in pairs is 1, 3, 5, 7, 9. Remember: Apples with quantities of 2, 4, 6, 8 and 10 can all find good friends in pairs, and we will give them a nice name-even number. The number of apples is 1, 3, 5, 7, 9. When we make friends in pairs, we always leave one, and we give it a nice name, singular. So which numbers are even? (2, 4, 6, 8, 10) Which numbers are singular? (1, 3, 5, 7, 9) Children repeat several times.
(5) Show Chinese character phrases, distribute digital cards to children, and let them classify these numbers according to single and double numbers.
(6) Yes! These numbers that can find good friends are called even numbers, and those that can't all find good friends are called odd numbers. Now let's play a game of "one person standing and two people sitting", shall we?
2. Consolidate the odd and even numbers-the game "Stand single and sit double".
Rules of the game: I'll show you the digital card. If it is singular, everyone will stand up. If it is an even number, everyone is seated. Ok, from now on, let's see who responds fastest!
3. Discover and master the arrangement rules of odd and even numbers (game "flop").
(1) Explain the rules and play.
Teacher: Let's play flop. The teacher arranges the digital cards from 1 to 10 (reverse side up). Please follow the teacher's instructions. Invite the children to play this game now. (For example, please turn out all odd numbers or even numbers in the card. )
(2) Discussion: How to translate correctly and quickly?
Teacher: Just now, some children wanted to see each card, whether it was odd or even. Is there a better way?
In children's discussion, the teacher guides children to observe the arrangement law of even and odd numbers within "10".
(3) the next game.
(4) Summary: The number 1- 10 is alternately arranged according to a singular number and a double number, so we will flip the cards every once in a while, which will be quick and ensure that there will be no mistakes.
4, looking for odd and even numbers-the game "hide and seek"
(1) Even and odd numbers will appear in many other places. Now they want to play hide-and-seek with us, will you? (Showing pictures) Both odd and even numbers are hidden in this beautiful picture. Please find out which animals and plants in the picture are even and which animals and plants are singular. You can record it in various ways and tell everyone later, ok?
(2) Who will introduce you first? Which animals and plants do you find even and odd? (Introduction of a single child)
5. Operation part: "Who gives gifts" and "Calculate".
(1) Explain the meaning of the problem and the operation requirements.
(2) distribution of information, children's operation and teachers' tour guidance.
(3) Evaluate children's operation results.
Activity reflection:
Today, what is given to children is the math activity "Understanding even and odd numbers" in large classes, which makes children feel the main characteristics of even and odd numbers. The difficulty is to operate and compare by yourself, and distinguish the odd and even numbers within 10. In the link setting, I adopted the method that the teacher demonstrates first, the child discovers the law, the teacher summarizes, and the child operates again to deepen the perception.