Lesson Plan | Technical Methodology | Electricity: Resistor Association

Objectives

Duration: 10 to 15 minutes

The purpose of this stage is to introduce students to the fundamental concepts of resistor association, preparing them to solve practical problems they will encounter in the job market and in their daily lives. The development of these practical skills will be essential to empower students to design and analyze electrical circuits, as well as strengthen their understanding of electricity in an applied context.

Main Objectives

1. Understand the basic concepts of resistors in series and parallel.

2. Apply mathematical formulas to calculate equivalent resistors in different configurations.

3. Identify and solve practical problems involving resistor association.

Side Objectives

1. Recognize the importance of resistors in everyday electrical circuits.

Introduction

Duration: (10 to 15 minutes)

The purpose of this stage is to introduce students to the fundamental concepts of resistor association, preparing them to solve practical problems they will encounter in the job market and in their daily lives. The development of these practical skills will be essential to empower students to design and analyze electrical circuits, as well as strengthen their understanding of electricity in an applied context.

Contextualization

Electricity is an essential part of our lives, from the devices we use daily to the systems that power our homes and cities. Understanding how resistors work and how they can be combined in circuits is crucial for solving practical problems in various fields such as electronics, electrical engineering, and even home repairs. The association of resistors, whether in series or parallel, allows for controlling current and voltage in a circuit, which is fundamental for the proper operation of many electronic devices.

Curiosities and Market Connection

🔌 Curiosities and Market Connection: Resistors are fundamental components in almost every electronic device, from smartphones to large industrial machines. Electronics and technology companies, such as Samsung and Intel, employ engineers who need to master resistor association to design efficient circuits. In home repairs, understanding how to replace and combine resistors can make the difference between fixing a device and needing to buy a new one.

Initial Activity

🔍 Initial Activity: Present a short video (2-3 minutes) that shows the application of resistors in everyday devices, such as in a smartphone or a video game console. Ask the students: "Have you ever wondered how your smartphone regulates power to function properly?" Let them briefly discuss in pairs about where they think resistors are used in common devices.

Development

Duration: 60 to 65 minutes

The purpose of this stage is to allow students to apply theoretical concepts about resistor association in practical situations, developing skills that are directly relevant to the job market. Through the construction of circuits and problem-solving, students consolidate their understanding and gain confidence to face real challenges.

Covered Topics

1. Resistor association in series
2. Resistor association in parallel
3. Calculation of equivalent resistors
4. Practical applications of resistors in circuits

Reflections on the Theme

Guide students to reflect on how resistor association is used in different electronic devices they use daily. Question them about how knowledge of this technique can be useful in their future careers, whether in engineering, electronics, or even in home repairs.

Mini Challenge

Building Circuits with Resistors

In this activity, students will build simple circuits using resistors in series and in parallel. They will measure the total resistance of the circuits and compare with the calculated theoretical values.

Instructions

1. Divide students into groups of 3 to 4 members.
2. Distribute kits of electronic components that include resistors, connection wires, multimeters, and breadboards.
3. Ask each group to build two circuits: one with resistors in series and the other with resistors in parallel, using the provided resistor values.
4. Students should measure the total resistance of each circuit using the multimeters.
5. Guide students to write down the measured values and compare them with the previously calculated theoretical values.
6. Facilitate a group discussion about possible discrepancies between the measured values and theoretical values, addressing factors such as wire resistance and resistor tolerance.

Objective: Apply theoretical knowledge about resistor association in a practical activity, developing skills in assembling and measuring electrical circuits.

Duration: 30 to 35 minutes

Evaluation Exercises

1. Calculate the equivalent resistance for three resistors in series with values of 10Ω, 20Ω, and 30Ω.
2. Determine the equivalent resistance for three resistors in parallel with values of 10Ω, 20Ω, and 30Ω.
3. A circuit has two resistors of 15Ω and 30Ω in series, connected in parallel with a 10Ω resistor. Calculate the equivalent resistance of the circuit.
4. Explain how the association of resistors in parallel can be used to increase the power supported by an electrical circuit.

Conclusion

Duration: (15 to 20 minutes)

The purpose of this stage is to consolidate students' learning, ensuring that they understand the importance of the concepts discussed and how they can apply them in real situations. Through recap and discussion, students reinforce their understanding, reflecting on the practical applications and relevance of the knowledge acquired in their future careers and daily lives.

Discussion

💬 Discussion: Facilitate an open discussion with students about the points covered during the lesson. Ask about the difficulties encountered in assembling the circuits and measuring resistances. Question how they resolved the problems they encountered and what they learned from the practical activity. Encourage students to reflect on how the concepts of resistor association can be applied in their future careers and in everyday situations, such as home repairs or creating personal electronic projects.

Summary

📜 Summary: Recap the main concepts covered in the lesson, such as the association of resistors in series and parallel, the calculation of equivalent resistances, and the practical applications of these concepts. Highlight the importance of precision in calculations and measurements and how this knowledge is applicable in various professional fields.

Closing

🔚 Closing: Explain how the lesson connected theory and practice, showing the importance of resistors in various electronic devices. Reinforce that understanding resistor association is essential for designing and analyzing electrical circuits, fundamental skills for engineers and technicians. Emphasize that this understanding is also useful in domestic contexts and personal projects, promoting a practical and applied view of electricity.