Lesson Plan | Active Learning | Comparison of Natural Numbers Less Than 20

Assumptions: This Active Lesson Plan assumes: a 100-minute class, prior student study with both the Book and the start of Project development, and that only one activity (among the three suggested) will be chosen to be conducted during the class, as each activity is designed to take up a significant portion of the available time.

Objectives

Duration: (5 - 10 minutes)

The Objectives stage aims to clearly establish what is expected of students to learn and demonstrate by the end of the lesson. By defining specific objectives, students' focus is directed toward the essential aspects of comparing natural numbers, facilitating the practical application of the concepts studied at home. This clarity is crucial to ensure that classroom activities are focused and effective.

Main Objectives:

1. Empower students to compare natural numbers less than 20, identifying and ordering them according to their magnitude.

2. Develop the ability to discern and verbalize which number between two is greater or lesser, preparing students for practical comparison situations.

Side Objectives:

1. Encourage logical reasoning and attention to detail through practical and playful activities.

Introduction

Duration: (15 - 20 minutes)

The Introduction stage serves to engage students and connect prior knowledge with the content that will be explored in the lesson. Through problem situations, students are encouraged to use logical reasoning to apply what they reviewed at home. The contextualization shows the importance of the theme in the real world, increasing the interest and perceived relevance for the students.

Problem-Based Situations

1. Imagine a situation where you have 15 apples and your friend has 10. Who has more apples? How can you prove this using what you learned about comparing numbers less than 20?

2. Think of two characters from a game. The first has 18 points and the second 12. How can we organize these characters from strongest to weakest? Discuss with your classmate and use tokens to represent the points.

Contextualization

The ability to compare numbers is essential in many everyday situations, such as deciding which line at an amusement park is shorter or in games where points are compared to determine the winner. Additionally, understanding the order of numbers helps with early notions of planning and organization. Interesting facts like 'who was the greatest mathematician of all time?' can be introduced to spark students' interest and curiosity about the importance and relevance of the topic.

Development

Duration: (70 - 75 minutes)

The Development stage aims to allow students to practically and interactively apply the knowledge acquired at home about comparing natural numbers less than 20. Through games and playful activities, this stage seeks to consolidate learning in a fun and engaging way, as well as promote social skills such as teamwork and communication. Each proposed activity aims to reinforce students' ability to order numbers and justify their choices, developing a deeper understanding of the mathematical concept.

Activity Suggestions

It is recommended to carry out only one of the suggested activities

Activity 1 - Snack Bar Game

> Duration: (60 - 70 minutes)

- Objective: Develop the skill to order natural numbers less than 20 and justify their choices based on the content learned at home.

- Description: In this activity, students will be divided into groups of up to five people and will take on the role of snack bar attendants. Each group will receive cards with food orders that have different item counts. The challenge is to organize the orders in ascending order of quantity, using knowledge about natural numbers less than 20.

- Instructions:

• Divide the class into groups of up to five students.

• Distribute the order cards to each group. Each card will have a different number of items.

• Ask each group to order the requests from smallest to largest, using the number of items as the criteria.

• Students must justify their choices, explaining why one order should come before or after another.

• Conduct a class discussion where each group presents their sequence and justifications.

Activity 2 - Number Race

> Duration: (60 - 70 minutes)

- Objective: Practice ordering natural numbers in a physical activity that reinforces learning in a dynamic and collaborative way.

- Description: Students will participate in a relay race where, at each station, they must organize cards with natural numbers less than 20 in ascending order. Each station represents a number from 0 to 20, and students must run to the missing station and complete the sequence.

- Instructions:

• Prepare a starting line and stations numbered from 0 to 20, with an empty space where the correct number should be placed.

• Divide the class into groups of up to five students and position each group at a different starting station.

• Give the starting signal. The first student from each group runs to the next station, picks the card with the missing sequence number, and places it in the correct spot.

• The second student runs to the next station, and so on, until the sequence is completed correctly.

• The first group to complete the race correctly wins.

Activity 3 - Assembling the Number Puzzle

> Duration: (60 - 70 minutes)

- Objective: Reinforce the ability to order natural numbers and promote teamwork and problem-solving.

- Description: In this activity, each group of students will receive a set of puzzle pieces, each containing a natural number less than 20. They must assemble the puzzle, ensuring that the numbers are in ascending order.

- Instructions:

• Distribute the disassembled puzzles to each group.

• Explain that each piece contains a number and that the goal is to assemble the puzzle so that the numbers are in ascending order.

• Students should first organize the pieces in a line, deciding the correct sequence.

• After deciding the sequence, they begin to assemble the puzzle.

• The first group to complete the puzzle correctly, with the numbers in ascending order, wins.

Feedback

Duration: (10 - 15 minutes)

The purpose of the Feedback stage is to consolidate learning, allowing students to reflect on the practical content applied in the classroom and share their experiences. This discussion helps identify possible gaps in understanding and reinforces the concepts learned. Additionally, by verbalizing their strategies and difficulties, students develop communication and argumentation skills, essential for continuous learning in Mathematics.

Group Discussion

After completing the activities, gather all students for a group discussion. Start the discussion with a brief introduction, highlighting the importance of being able to compare and order natural numbers less than 20 in everyday situations. Then invite each group to share their experiences and discoveries during the activities. Encourage students to explain how they used prior knowledge to solve the proposed challenges and which strategies proved most effective. Use this time to reinforce learning and correct any possible misunderstandings.

Key Questions

1. What strategies did you use to determine the order of the numbers in the different activities?

2. How did prior knowledge about natural numbers less than 20 help you complete the tasks?

3. Was there any situation during the activities where you had doubts about which number was greater or lesser? How did you resolve that?

Conclusion

Duration: (5 - 10 minutes)

The Conclusion stage serves to consolidate learning, ensuring that students have understood the key concepts of the lesson and can relate them to real-life and practical situations. By summarizing the content, the teacher reinforces students' memory and helps in the retention of knowledge. Additionally, by highlighting the connection between theory and practice and the usefulness of the concepts learned, this stage stimulates interest and appreciation for mathematical learning.

Summary

In this final stage, the teacher should summarize the main points addressed, highlighting the students' ability to compare and order natural numbers less than 20. It's essential to recap the strategies discussed and the practical activities carried out, reinforcing the significance of each step in the learning process.

Theory Connection

Today's lesson was carefully designed to connect the theory studied at home with practice in the classroom. The proposed activities, such as 'Snack Bar Game', 'Number Race', and 'Assembling the Number Puzzle', were chosen to vividly and interactively illustrate how the comparison of numbers applies in everyday situations, solidifying the understanding of theoretical concepts through practical application.

Closing

Lastly, the teacher should emphasize the relevance of the content learned for students' daily lives, highlighting how the ability to compare and order numbers is essential in various practical situations, from deciding which toys to bring to school to understanding game and competition rules. Highlighting this practical applicability helps motivate students and recognize mathematics as a useful tool and not just a set of abstract rules.