Objectives (5 - 7 minutes)

1. Understanding of organic halide nomenclature: Students should be able to understand and correctly apply the rules of nomenclature for organic halides, recognizing the different categories of halides (fluoride, chloride, bromide, and iodide). They should be able to identify the organic function of the halide and name it correctly, both by IUPAC (International Union of Pure and Applied Chemistry) and by common nomenclature.

2. Practice of organic halide nomenclature: Students should be able to practice the nomenclature of organic halides through exercises applying the learned rules directly. They should be able to name and identify the organic halide compound from its structural formula.

3. Recognition of organic halides in practical contexts: Students should be able to identify examples of organic halides in real situations, such as on labels of chemical products, medications, pesticides, etc., and understand the importance of correct nomenclature for the safety and understanding of the chemicals used in everyday life.

Secondary Objectives:

• Development of critical thinking: Through the study of organic halide nomenclature, students should develop critical thinking skills, such as the ability to analyze and apply rules, attention to detail, and problem-solving skills.

• Promotion of autonomous learning: By the end of the lesson, students should feel confident to continue studying the topic autonomously, using the provided resources and seeking clarification for their doubts.

Introduction (10 - 12 minutes)

1. Review of Previous Content: The teacher starts the lesson by reviewing basic concepts of organic functions already studied, such as functional groups, and briefly reviewing the nomenclature of organic compounds. For example, the teacher can propose the identification and nomenclature of some simple compounds to reinforce the content. During this review, it is important to clarify what halides are and their importance and applications in everyday life.

2. Problem-Solving Scenarios: The teacher presents two problem-solving scenarios that address organic halide nomenclature:

   • Problem 1: "How would you name the compound with the formula CH3CH2CH2Br?"
   • Problem 2: "If you found a chemical product named 'methyl bromide,' would you be able to identify its structural formula?"

3. Contextualization: The teacher contextualizes the importance of organic halide nomenclature, emphasizing that the correct identification and naming of these compounds is crucial in various areas such as medicine, pharmacy, chemical engineering, among others. For example, the teacher can mention that misinterpreting a compound name on a chemical product label can lead to serious accidents. Furthermore, the correct identification of organic halides is fundamental for understanding their properties and applications.

4. Engaging Students' Attention: To introduce the topic in an interesting way and capture students' attention, the teacher can:

   • Curiosity 1: "Did you know that organic halides are widely used in the pharmaceutical industry? Many medications, such as anesthetics and analgesics, contain halides in their composition."
   • Curiosity 2: "How about this curiosity: organic halides are used in aerosols for refrigerators and deodorant sprays. That's right, that aerosol deodorant you use contains an organic compound called halides in its formulation."

These curiosities can be followed by direct questions to the students, stimulating active participation and curiosity about the subject.

Development (20 - 25 minutes)

1. Theory (10 - 12 minutes)

   • Definition of Organic Halide: The teacher begins explaining the topic by defining what organic halides are, emphasizing that they are compounds derived from hydrocarbons by replacing one or more hydrogen atoms with halogen atoms (fluorine, chlorine, bromine, or iodine). The teacher can present the general formula of an organic halide (R-X, where R is a radical and X is a halogen atom) and examples of common organic halides.

   • Properties and Applications: Next, the teacher explains the main physical and chemical properties of organic halides, such as boiling point, solubility, stability, reactivity, etc. Then, the teacher discusses some of the main applications of these compounds, reinforcing the examples mentioned in the Introduction and adding new ones, such as the use of chlorofluorocarbons (CFCs) as refrigerants and propellants until their prohibition due to their environmental impact.

   • Organic Halide Nomenclature: The teacher introduces the rules of organic halide nomenclature, starting with IUPAC, which is the most used and standardized. The teacher can emphasize the importance of naming compounds correctly so that their structure and properties can be readily identified and understood. The teacher should explain each of the rules, provide examples of application, and address doubts.

2. Practice (10 - 12 minutes)

   • Nomenclature Exercises: The teacher guides students in solving some organic halide nomenclature exercises together. These exercises should vary in difficulty, starting with simple examples and gradually introducing more complex rules. The teacher should encourage students to actively participate in solving the exercises, asking questions to verify understanding of the content and correcting errors constructively.

   • Identification of Halides in Practical Situations: The teacher challenges students to identify organic halides in practical situations, such as reading labels of chemical products, medications, etc. This activity aims to reinforce the importance of knowing organic halide nomenclature for everyday life, as well as to stimulate critical thinking and application of knowledge in real contexts.

3. Discussion (3 - 5 minutes)

   • Content Review: The teacher conducts a quick review of the covered content, emphasizing the main nomenclature rules and the properties and applications of organic halides. The teacher should clarify any remaining doubts and reinforce the most important concepts.

   • Reflection on the Lesson: The teacher encourages students to reflect on what they learned during the lesson, asking questions such as, for example, "What was the most important concept you learned today?" and "What questions have not been answered yet?" The teacher should note these questions to guide the planning of future lessons.

This Development stage is crucial for students' understanding of organic halide nomenclature and for consolidating the learned content. The teacher should be attentive to clarify any doubts that may arise and to stimulate active student participation through questions and discussions.

Return (8 - 10 minutes)

1. Review and Reflection (3 - 4 minutes)

   • The teacher should start this stage by quickly reviewing the main points covered during the lesson. For example, the teacher can recap the rules of organic halide nomenclature, the properties and applications of these compounds, and the importance of correct nomenclature in everyday life and in various professional fields.
   • Next, the teacher should propose that students reflect on what they have learned. The teacher can ask questions such as: "What was the most important concept you learned today?", "What questions have not been answered yet?", and "How can you apply what you learned today in your daily life or future career?" The teacher should encourage students to express their opinions and share their reflections.
   • The teacher can also ask students to write down in a notebook or digital document the answers to these questions as a way to consolidate learning and identify possible gaps in understanding the content.

2. Connection to Practice (2 - 3 minutes)

   • The teacher should then prompt students to reflect on the connection between the theory learned and its practical application. The teacher can ask questions such as: "How can organic halide nomenclature be useful in your daily life?" and "How can understanding organic halide nomenclature be applied in different professions or areas of study?".
   • The teacher should allow students to share their ideas and experiences, reinforcing the importance of the acquired knowledge for understanding and safety in the use of chemical products in everyday life and in various professional fields.

3. Student Feedback (3 - 4 minutes)

   • Finally, the teacher should request feedback from students about the lesson. The teacher can ask questions such as: "What was the most useful aspect of today's lesson?" and "What could be improved in the next lesson?" The teacher should be open to constructive criticism and should use the received feedback to enhance future lessons.

This Return stage is essential to consolidate students' learning and to promote reflection on the connection between theory and practice. Additionally, it allows the teacher to assess the effectiveness of the lesson and seek ways to improve their teaching.

Conclusion (5 - 7 minutes)

1. Summary of Contents (2 - 3 minutes)

   • The teacher should start the Conclusion by summarizing the main contents covered during the lesson. For example, the teacher can review the definitions of organic halide, the nomenclature rules, the properties and applications of these compounds, and the importance of correct nomenclature in everyday life and in various professional fields.
   • The teacher should emphasize the most relevant points and clarify any remaining doubts.

2. Connection of Theory, Practice, and Applications (1 - 2 minutes)

   • Next, the teacher should explain how the lesson connected theory, practice, and applications. For example, the teacher can highlight how the theory of organic halide nomenclature was applied in practice through exercises and the identification of halides in real situations.
   • The teacher should reinforce the importance of the acquired knowledge for understanding and safety in the use of chemical products in everyday life and in various professional fields.

3. Supplementary Materials (1 - 2 minutes)

   • The teacher should then suggest some supplementary materials for students who wish to deepen their knowledge of organic halide nomenclature. These materials may include books, websites, videos, apps, among others.
   • The teacher should briefly explain the content and usefulness of each material, and encourage students to explore them autonomously as a way to promote continuous learning.

4. Relevance of the Subject (1 minute)

   • Finally, the teacher should emphasize the relevance of the subject presented for everyday life and for various areas of study and professions. The teacher should reinforce that understanding and correctly applying organic halide nomenclature is essential for safety and effectiveness in the use of chemical products, and that this knowledge is fundamental for those who wish to pursue careers in fields such as medicine, pharmacy, chemical engineering, among others.

The Conclusion is a crucial stage to consolidate students' learning and to motivate them to continue studying the subject. Additionally, it allows the teacher to assess the effectiveness of the lesson and seek ways to improve their teaching.