Context

Physics is a discipline that fascinates with its power to describe natural phenomena around us and the principles that govern the universe. One of these principles is electricity, a phenomenon that can be observed in numerous situations in our daily lives, from lighting our homes to powering our electronic devices.

The concepts of conductors and insulators are fundamental to understanding this phenomenon. Electrical conductors are materials that allow the free movement of electric charges, that is, they allow the passage of electric current through them. Insulators, on the other hand, are materials that oppose the movement of electric charges, preventing the passage of electric current.

Although these are seemingly simple concepts, they involve an extraordinary theoretical complexity, as they are intrinsically linked to the properties of materials and, therefore, to the concepts of atomic structure and chemical bonding, present in the Chemistry discipline. In addition, these concepts can be explored in the light of Mathematics, through the use of equations and calculations that allow, for example, the calculation of the electrical resistance of a material.

Throughout history, all these theories have been developed and perfected by a legion of scientists who have contributed to our current understanding of electricity. This knowledge has been applied in numerous fields, from industry to medicine, through computer science and engineering.

These principles are so present in our lives that we often do not realize how they work and how important it is to understand them for the development of our society. For example, choosing the appropriate material for electrical conduction in an engineering project is a crucial decision that can determine the success or failure of such a project.

This project aims not only to strengthen students' understanding of the topic of conductors and insulators but also to highlight its relevance in our daily lives and its importance for various sectors of our economy and society.

I recommend the following sources for study:

• Book "Fundamentals of Physics" by David Halliday and Robert Resnick;
• Website "Brasil Escola", which has several articles and video lessons on the topic, including this article on electrical conductors and this other one on electrical insulators;
• YouTube channel "Ciência Todo Dia", which presents this video on electricity.

Practical Activity

Title: "Electrical Properties of Materials: Conductors and Insulators"

Project Objective:

This project aims to improve students' understanding of electrical conductivity and the resistance offered by materials, classifying them as conductors or insulators, and associating this understanding with the atomic structure and chemical properties of these materials.

Detailed Project Description:

Students will be encouraged to investigate different types of materials (such as copper, glass, plastic, rubber, among others), which will be collected by themselves in their homes. With these materials in hand, the groups will perform tests to classify them as electrical conductors or insulators, noting their observations.

The project will be conducted over a period of two weeks, with each group consisting of 3 to 5 students. Students will be asked to spend an average of 12 hours during this period, both for practice and for preparing the report.

Required Materials:

1. Digital multimeter;
2. Various materials for testing (copper, glass, plastic, rubber);
3. Power source (batteries or batteries);
4. Connection wires;
5. Periodic table;
6. Material samples for testing.

Detailed Step-by-Step for Carrying Out the Activity:

1. Collect a variety of materials in your homes that will be tested to determine if they are electrical conductors or insulators.
2. Prepare a safe environment to conduct the tests. Remember: safety first!
3. Set up the multimeter to measure resistance.
4. Connect each material to the power source using the wires, and measure the resistance using the multimeter.
5. Record the measured resistance for each material.
6. Classify each material as a conductor or insulator based on the resistance readings. (Generally, materials with low resistance are conductors, while materials with high resistance are insulators.)
7. Research and discuss the atomic structure and chemical properties of each material tested and how they influence its ability to conduct electricity.

Project Deliverables:

After completing the practical activity, groups are required to prepare a detailed report, explaining the observations and conclusions made during the project. The report should have the following sections:

1. Introduction: This section should contextualize the theme with reference to its relevance and application in the real world. In addition, students should provide the objective of this project.

2. Development: Here, students should describe the activity in detail, explain the theory behind the concepts of conductors and insulators, and discuss the observations and results of the experiment. They should also describe the methodology used to collect and analyze the data.

3. Conclusions: Students should conclude the work by emphasizing their main points, the learnings obtained, and their conclusions about the different materials tested.

4. Bibliography: Refer to all sources of information used to work on the project, including books, web pages, videos, etc.

It is expected that this report be written in a way that demonstrates students' in-depth understanding of the concepts of conductors and insulators, their relationship with the atomic structure and chemical properties of materials, and their ability to apply this knowledge in practice.