This article will guide first-grade students to understand the rules of the 13579 number series in a simple and easy-to-understand way, and help them master this mathematical concept through a variety of Xi practice methods, so as to cultivate their logical thinking and interest in mathematics.
In first-grade math classes, students often encounter a variety of interesting number pattern problems. Among them, the 13579 sequence is a classic example. This sequence of numbers may seem simple, but it contains wonderful mathematical laws. So, how do you get first-graders to understand and master this pattern?Next, we will lead students to explore the mysteries of the digital world through vivid examples and interactive Xi.
1. Observe the sequence of numbers and discover the law.
First, we can ask students to look at the number sequence of 13579 and guide them to notice the change between each number. Students will soon discover that each number in this sequence is 2 more than the previous one. This is a series of equal differences with a tolerance of 2.
2. Understand the law and draw inferences from one example.
After the students discover the pattern, we can further guide them to understand the pattern. We can ask students to think: If we continue to write according to this pattern, what will be the next number?Through reflection and discussion, students come to the conclusion that the next number should be 9+2=11.
To further solidify the students' understanding, we can also ask them to write similar sequences on their own. For example, starting with 2 and adding 3 each time, they will get a sequence like 25811. This kind of Xi can help students better grasp the concept of equal difference series.
3. Apply the law and solve the problem.
After mastering the rules, students can use them to solve some practical problems. For example, we can give students a fun math problem: How many times does Red have to jump from the first to the tenth square each time she jumps one square at a time in a grid jumping game?
Through reflection and discussion, students will discover that the problem is actually the sum of the 13579 sequence. They can turn this problem into a simple math problem: 1+3+5+7+9=?Then, using the summation formula of the equal difference series, the answer can be quickly obtained.
Fourth, summarize and review, expand and extend.
At the end of the class, we can summarize and review the lesson, so that students can reinforce the concepts and laws of the equal difference series. At the same time, we can also leave them with some extended questions, such as: Can you find any other interesting patterns of numbers?Or can you use the law of the equal difference series to solve some practical problems?
Through this teaching method, first-grade students can not only understand and master the rules of the 13579 number series, but also cultivate their interest in mathematics and logical thinking ability in a relaxed and happy atmosphere. Let's work together to guide children into the wonderful world of mathematics!