Objectives (5 minutes)

1. Develop students' ability to read and compare natural numbers less than 100,000, allowing them to recognize and understand the structure of five-digit numbers.
2. Empower students to understand the order and positional value of digits in five-digit numbers, helping them develop numerical fluency.
3. Provide students with the opportunity to apply their mathematical knowledge in a practical and meaningful way, through problem-solving involving the reading and comparison of five-digit numbers.

The teacher should present these learning objectives to the students at the beginning of the lesson, so they know what is expected for them to learn and be able to do by the end of the lesson.

Introduction (10 - 15 minutes)

1. Review of previous content: The teacher starts the lesson by reminding students about reading and comparing numbers less than 10,000. They may be asked to solve simple examples on the blackboard or in their notebooks to refresh their memory.

2. Problem-solving situations: The teacher presents two problem-solving situations involving five-digit numbers. For example:

   • "Imagine we have a school with 75,000 students. Now, imagine the neighboring city has another school with 65,000 students. Which school has more students? How can we find out?"
   • "Now, imagine we have two cities. In the first one, there are 80,000 people, and in the second one, 85,000 people. Which city has more inhabitants? How can we find out?"

3. Contextualization: The teacher explains that in the real world, we often need to compare large quantities or very large numbers. For example, when comparing the number of people in different cities, or when working with large amounts of money. It is emphasized that the skills they will learn in today's lesson are very useful for these situations.

4. Introduction to the topic: To spark students' interest, the teacher may present two curiosities related to the lesson's topic:

   • "Did you know that Brazil has more than 200 million inhabitants? And that China, the most populous country in the world, has over 1 billion inhabitants? To compare these numbers, we need to understand how to read and compare numbers with many digits."
   • "What if I told you that the number of stars in the Milky Way, our galaxy, is estimated at around 100 billion? And that the number of atoms in a drop of water is estimated at around 5 sextillion? These are very large numbers, but we can understand them if we know how to read and compare numbers with many digits."

The teacher must ensure that students are engaged and interested during the introduction, as this will establish a solid foundation for the rest of the lesson.

Development (20 - 25 minutes)

1. Theoretical explanation (10 - 15 minutes): In this stage, the teacher should theoretically explain how to read and compare five-digit numbers. They can use the blackboard or a projector to illustrate examples and make the explanation more visual. Here are some topics the teacher can address:

   • Review of digits and positional values: The teacher should review with students the concept of digits and positional values, reminding them that each digit in a number has a different value based on its position. For example, in the number 35,000, the 5 in the thousands place is worth 5 times more than the 5 in the units place.
   • Reading five-digit numbers: The teacher should teach students how to read five-digit numbers. For example, the number 60,000 can be read as "sixty thousand." The teacher can provide other examples and ask students to read them aloud.
   • Comparison of five-digit numbers: The teacher should explain how to compare five-digit numbers. They can use numerical representation on the blackboard to show students how to do this. For example, to compare 75,000 and 65,000, the teacher can show students that 75,000 is greater because the 7 in the tens of thousands place is greater than the 6 in the tens of thousands place.
   • Application of comparison symbols: The teacher should teach students how to use the "greater than" (>), "less than" (<), and "equal to" (=) symbols to compare numbers. For example, the teacher can show students how to write that 75,000 is greater than 65,000 or that 80,000 is equal to 80,000.

2. Practical activities (10 - 15 minutes): The teacher should then propose that students apply what they have learned through practical activities. They can divide the class into small groups and distribute activity sheets containing problems to solve. The activities should vary in difficulty to meet the needs of all students. Examples of activities include:

   • Problem-solving situations with five-digit numbers: The teacher can propose problem-solving situations similar to those presented in the introduction. For example, "Which of the numbers is greater, 30,000 or 20,000? And which is smaller, 40,000 or 50,000?"
   • Comparison games: The teacher can create card games or board games where students must compare five-digit numbers. For example, each student receives a card with a number and must compare it with another student's number. The student with the larger number wins the round.
   • Writing activities of numbers in full: The teacher can ask students to write five-digit numbers in full. For example, the teacher can dictate the number 35,000 and students must write it as "thirty-five thousand."

3. Group discussion (5 - 7 minutes): After completing the activities, the teacher should gather all students for a group discussion. Each group will have the opportunity to present their answers and solutions, allowing students to learn from each other and correct any possible errors. The teacher can also use this moment to reinforce key concepts and clarify any doubts that may have arisen.

It is important for the teacher to closely monitor the practical activities and group discussion, providing guidance and support as needed. This ensures that students are truly understanding the concepts and applying them correctly.

Feedback (10 - 15 minutes)

1. Group review (5 - 7 minutes): The teacher should gather students for a group review. Each group will have the opportunity to present their solutions and answers to the practical activities carried out. The teacher can use this moment to highlight the strategies used by different groups to solve the problems, emphasizing the importance of effective methods for comparing numbers.

2. Connection with theory (3 - 5 minutes): After the groups' presentations, the teacher should connect the solutions found with the theory presented in the development stage of the lesson. The teacher can ask students how they used the concepts of positional value and number comparison to solve the problems. This step helps reinforce students' understanding of theoretical concepts and their practical application.

3. Individual reflection (2 - 3 minutes): The teacher should propose that students reflect individually on what they learned in the lesson. For this, the teacher can ask two simple questions:

   • "What was the most challenging part of today's lesson and why?"
   • "What was the most interesting part of today's lesson and why?"

   The teacher can ask students to answer these questions mentally or out loud. This reflection step helps consolidate learning and provides the teacher with valuable feedback on the effectiveness of the lesson.

4. Teacher feedback (2 - 3 minutes): Finally, the teacher should provide overall feedback on the lesson. They can praise students' efforts and progress, highlight the class's strengths, and identify areas that still need more practice. The teacher should also reinforce the importance of the content learned and how it applies in the real world.

Feedback is a crucial stage in the learning process, as it allows students to consolidate what they have learned, reflect on the process, and receive feedback to improve. The teacher should ensure that this stage is conducted in a positive and constructive manner, promoting a welcoming and stimulating learning environment.

Conclusion (5 - 7 minutes)

1. Summary and Recap (2 - 3 minutes): The teacher should start the conclusion by summarizing the main points of the lesson. They should remind students of the importance of understanding the structure and positional value of five-digit numbers and how they can be read and compared. The teacher can do a quick recap, asking students to remember how to read and compare a five-digit number.

2. Connection between Theory, Practice, and Applications (1 - 2 minutes): Next, the teacher should explain again how theory and practice connect. They can say, "Today, we learned the theory of how to read and compare five-digit numbers, and we practiced a lot with various activities. Can you see how the theory helped us solve practical problems?" The teacher should emphasize that the ability to read and compare five-digit numbers is a very useful skill in real life, in situations involving large quantities or very large numbers.

3. Extra Materials (1 minute): The teacher can suggest some extra materials for students who wish to deepen their understanding of the subject. This may include textbooks, educational websites with interactive games on numbers and operations, or even educational videos on YouTube. The teacher can say, "If you want to learn more about how to read and compare five-digit numbers, I recommend that you look for online games or activities. There are also many cool books that can help you better understand this subject. And if you have any questions, you can always ask me!"

4. Importance of the Subject (1 minute): Finally, the teacher should reinforce the importance of what was learned. They can say, "Today, we learned a very important skill: how to read and compare five-digit numbers. This may seem a bit complicated at first, but with practice and patience, you will get better and better. And this will be very useful for you, both at school, when solving math problems, and in daily life, when comparing quantities or looking at large numbers, such as the number of people in a city or the population of a country. Congratulations on today's work, and keep practicing!"

The conclusion is a crucial moment to consolidate students' learning and to motivate them to continue exploring the topic on their own. The teacher should ensure that the conclusion is a positive and encouraging stage, reinforcing the importance of what was learned and the students' ability to apply that knowledge.