Contextualization

Magnets are fascinating and are present in our daily lives in ways that we may not even realize. When we open a refrigerator door, use a cell phone, or even turn on a computer, we are using the force of magnetism. Despite this phenomenon being so closely linked to our everyday life, we often do not fully understand the principles that govern its operation.

Magnets are objects that have a magnetic field around them. This means that they are capable of attracting or repelling other magnets or ferromagnetic objects. A magnet has two poles, north and south, each with distinct magnetic properties. The interaction between these poles generates the magnetic force that we know.

The study of magnets, known as magnetism, is a field of physics that has implications in various other disciplines, such as Chemistry and Mathematics. Furthermore, understanding magnetism allows for the creation and development of many technologies that are essential to our modern life.

Magnets play a crucial role in modern technology. They are used in electric motors, power generators, speakers, computer hard drives, among others. In medicine, the use of magnets in Magnetic Resonance Imaging (MRI) has been fundamental for diagnoses and treatments.

In this project, we will deepen our understanding of magnets through a theoretical and practical approach. We will work in groups and apply concepts not only from Physics but also from other areas of knowledge. Our goal is to be able to comprehend magnetism in a playful and interactive way, and perhaps even create our own technological applications with magnets!

Practical Activity - Discovering and Applying Magnetism

Project Objective

The main objective of this project is to lead students to deeply understand the magnetism of magnets, explore their characteristics, present their influence on objects around us, and create a useful application for these principles.

Detailed Project Description

In the first part of this project, students should conduct a series of experiments to explore the strength, field, and direction of magnetism. They should also study temperature variations and their influence on magnetism.

In the second part of the project, using the knowledge acquired earlier, students should create a practical and useful application that utilizes the principle of magnetism.

The project will be carried out by groups of 3 to 5 students and should be developed over three weeks, with a suggested dedication of at least 12 hours of work per student.

Necessary Materials

• Magnets of different sizes and shapes.
• Ferromagnetic materials of different types (nails, clips, screws, etc.).
• Compass.
• String.
• Graph paper.
• Iron powder.
• Compass.
• Thermometer.
• Styrofoam.
• Refrigerator.
• Other materials that may be useful for creating a practical application of magnetism.

Detailed Step-by-Step for Carrying Out the Activity

1. Initially, students should study magnetism, its principles, and its applications. They should seek to understand what magnetic force is, what magnetic poles are, how they interact with each other, and how they influence materials around them.

2. With the theoretical knowledge acquired, the group will begin the practical investigation. Within the group, students should conduct experiments to explore the concepts of magnetic force and field, magnetic field direction, and the influence of temperature variations on magnetism.

3. At the end of each experiment, students should analyze the collected data, draw conclusions, and see how these results align or diverge from what was studied in theory.

4. Next, students should think of a practical application of magnetism, using the knowledge acquired. They should plan, design, and build a prototype of this application.

5. Finally, students should document the entire process in a report. This documentation should include: Introduction (with the relevance and application of magnetism in the real world, as well as the project's objective); Development (with the theory studied, a detailed description of the activities carried out, the methodology used, and the discussion of the results obtained); Conclusion (with the main learnings and conclusions about the project); and Bibliography (with the sources used).

Project Deliverables

At the end of the project, students should deliver:

• Prototype of a practical application of magnetism.
• Detailed project report.

The prototype and the report will be evaluated according to the understanding of the concepts, the development of the activity, the application of technical and socio-emotional skills, and the originality and usefulness of the practical application created.