Objectives (5 - 10 minutes)

1. Understand the concept of soil formation, identifying the main processes that contribute to its composition and structuring.
2. Analyze the factors that influence soil degradation, highlighting human action as one of the main agents.
3. Discuss the main forms of soil conservation, recognizing the importance of preservation for environmental balance.

Secondary objectives:

• Stimulate critical thinking and environmental awareness among students, encouraging reflection on their actions in the environment in which they live.
• Promote interdisciplinarity, relating the lesson's theme to content from other disciplines, such as Science and Biology.
• Develop research and synthesis skills, through the search for complementary information and the organization of this information for knowledge construction.

Introduction (10 - 15 minutes)

1. Review of previous contents: The teacher should start the lesson by reminding students about the basic concepts of geology and relief, which were previously studied. These concepts are fundamental for understanding the soil formation process. The teacher can do this through a brief interactive review, with direct questions to the students.

2. Problem situations: Next, the teacher can present two problem situations to arouse students' interest:

   • Situation 1: 'Imagine you are in a rural area and observe that, after a long period of rain, the water is not penetrating the soil, but instead forming puddles. What could be happening?'
   • Situation 2: 'Imagine you are in a city and notice that, after heavy rain, some areas become flooded while others do not. Why does this happen?'

3. Contextualization: The teacher should then explain the importance of studying soil formation, relating it to students' daily life situations. For example, he can talk about the importance of soil for agriculture and food, and how soil degradation can affect these aspects.

4. Introduction to the topic: Finally, the teacher should introduce the lesson's topic, talking about soil formation and how it is affected by human action. To arouse students' curiosity, he can share some curiosities or interesting facts:

   • Curiosity 1: 'Did you know that soil is a non-renewable natural resource? It can take hundreds or even thousands of years to form, but can be degraded in just a few decades.'
   • Curiosity 2: 'Did you know that the Amazon, despite being known for its rich biodiversity, has nutrient-poor soils? This is because the region's vegetation quickly depletes the soil nutrients, which is one of the reasons why agriculture in the region is challenging.'

This stage of the lesson is crucial to arouse students' interest in the topic and prepare them for the Development of the contents.

Development (20 - 25 minutes)

1. Theory - Soil Formation (10 minutes): The teacher should start the expository lesson by explaining the concept of soil formation. He should emphasize that soil is a superficial layer of the earth's crust, composed of minerals, organic matter, water, and air. The teacher can reinforce that soil formation is a slow and continuous process, involving the interaction of various factors, such as the type of parent rock, climate, vegetation, the action of living organisms, and time. The teacher should describe each of these factors and how they contribute to soil formation.

2. Theory - Soil Degradation (10 minutes): Next, the teacher should address the soil degradation process. He should explain that soil degradation is the loss or alteration of its original properties, making it less productive and harming the environment. The teacher should discuss the main factors contributing to soil degradation, highlighting human action as one of the main agents. He can mention inadequate agricultural practices, such as excessive use of pesticides and monoculture, unplanned urbanization, mining, among others. The teacher should emphasize that soil degradation is a global problem that affects food security, biodiversity, and climate.

3. Theory - Soil Conservation (5 minutes): Finally, the teacher should present the main forms of soil conservation. He should explain that soil conservation involves adopting practices aimed at preventing or reversing soil degradation. The teacher should discuss some of these practices, such as the use of sustainable agricultural techniques (such as crop rotation and no-till farming), the preservation of native vegetation areas, the construction of terraces and contour lines in sloping areas, among others. The teacher should explain that soil conservation is essential to ensure the sustainability of agriculture and the preservation of the environment.

4. Discussion and Clarification of Doubts (5 - 10 minutes): After presenting the theory, the teacher should encourage student participation, promoting a discussion on the topic. He should clarify students' doubts and encourage reflections on the importance of soil conservation and individual and collective actions for environmental preservation. The teacher can ask students to share their experiences and observations about soil formation and degradation, making the lesson more relevant to students' reality.

This stage of the lesson is crucial for understanding theoretical concepts and for students to reflect on the importance of soil conservation. In addition, the discussion and clarification of doubts stimulate student participation and engagement.

Return (10 - 15 minutes)

1. Review of Contents (5 minutes): The teacher should start the Return stage by reviewing the main points covered in the lesson. He can do this interactively, asking students to share what they have learned. The teacher should ensure that all main concepts have been understood and assimilated by the students. He can reinforce the importance of each concept, relating them to the problem situations presented at the beginning of the lesson.

2. Connection with Practice (5 minutes): Next, the teacher should propose that students reflect on how the learned concepts connect with practice. He can do this by asking questions like:

   • 'How do soil formation and degradation affect agriculture and food production, which are part of our daily lives?'
   • 'What actions can we take, as individuals and as a society, to conserve soil and protect the environment?'

The teacher should encourage students to make associations with real and everyday situations, highlighting the importance of theoretical knowledge for understanding and acting in the world.

3. Individual Reflection (3 minutes): The teacher should propose that students make an individual reflection on what they learned in the lesson. He can suggest that students write down, in one minute, the answers to the following questions:

   1. 'What was the most important concept you learned today?'
   2. 'What questions have not been answered yet?'

This activity helps students consolidate what they have learned and identify possible doubts or difficulties.

4. Sharing and Closure (2 minutes): To end the lesson, the teacher should suggest that some students share their answers with the class. He should praise everyone's effort and participation, reinforcing the importance of the studied topic. The teacher should also inform about the content of the next lesson, preparing students for the next meeting.

This final stage of the lesson is essential to consolidate learning, promote reflection and connection between theory and practice, and encourage students' autonomy in the learning process.

Conclusion (5 - 10 minutes)

1. Summary (2 - 3 minutes): The teacher should start the Conclusion by summarizing the main points covered in the lesson. He should reinforce the definition of soil, the factors influencing its formation, the degradation processes, and the main forms of conservation. For example, he can recap the main factors contributing to soil formation (parent rock type, climate, vegetation, living organisms, and time) and the main agents of soil degradation (human action, such as inadequate agricultural practices, unplanned urbanization, and mining). He should also recall some soil conservation practices (use of sustainable agricultural techniques, preservation of native vegetation, construction of terraces and contour lines).

2. Connection between Theory and Practice (1 - 2 minutes): Next, the teacher should explain how the lesson connected theory to practice. For example, he can talk about how the presented theoretical concepts help understand practical situations, such as the difficulty of water penetration in the soil after heavy rains, the formation of puddles in urban areas, the loss of agricultural productivity due to soil degradation, among others. The teacher should emphasize that the theoretical knowledge acquired in the lesson can be applied to understand and solve problems related to soil and the environment.

3. Additional Materials (1 - 2 minutes): The teacher should suggest some additional materials for students to deepen their knowledge on the topic. These materials may include books, articles, documentaries, websites, and apps related to soil formation, degradation, and conservation. For example, he can suggest reading chapters from geography textbooks, researching on environmental research and conservation institutions' websites, watching documentaries on the topic, among others.

4. Importance of the Subject (1 - 2 minutes): Finally, the teacher should emphasize the importance of the studied subject for daily life and society as a whole. He should explain that soil is an essential resource for life on Earth, being fundamental for agriculture and food production. The teacher should also highlight that soil degradation is a global problem that affects food security, biodiversity, and climate. He should emphasize that soil conservation is everyone's responsibility and that small individual actions, such as using sustainable agricultural techniques in gardens, can make a difference.

This stage of the lesson is crucial to consolidate learning, reinforce the connection between theory and practice, and stimulate the continuation of studies outside the classroom. Additionally, it helps sensitize students to the importance of the topic and the relevance of their actions in the environment.