Contextualization

The International System of Units, or SI, as it is commonly referred to, is the modern form of the metric system and is the most widely used measurement system in the world. It is a universal language adopted by scientists with the main objective of standardizing units of measurement, thus avoiding confusion in the exchange of information among them.

The fundamental concepts of this system are: unit of measurement, measurement system, International System of Units, physical quantities, derived quantities, and fundamental quantities. The unit of measurement is a specific quantity of a certain physical quantity defined and adopted by convention. The measurement system is a set of measurement units and rules that relate them to each other. The physical quantity is an attribute of a phenomenon, body, or substance that can be qualitatively or quantitatively determined.

The world we live in is full of physical phenomena. To understand them, we need to measure their properties. For example, when you use a GPS, it relies on measurements of time and the speed of light to calculate your position. These units are standardized and defined by the SI, allowing people from all over the world to share and compare their measurements and experimental results.

Furthermore, the SI allows our societies to function more harmoniously. From simple things, like the size of screws or the amount of flour in a recipe, to more complex tasks, such as building bridges or navigating aircraft, depend on precise and standardized measurements.

To delve deeper into the International System, students can turn to reliable sources such as physics and mathematics textbooks. In addition, the following online resources in Portuguese are also highly recommended:

1. National Institute of Metrology, Quality and Technology (Inmetro) Weights and Measures Museum
2. International System of Units - Wikipedia

Practical Activity

Activity Title: "The World to Measure: The Masterpiece of the SI"

Project Objective

To understand the importance and impact of the International System (SI) of units in daily life and in various disciplines, applying and practicing unit conversions.

Detailed Project Description

This project consists of the development of an interactive E-book about the International System, addressing the history, units, conversions between them, and application in different contexts and disciplines. In addition, students will develop a set of activities and problems to be solved that use these units, providing practice in conversion and understanding the relevance of these concepts.

Required Materials

• Computer with internet access.
• Graphic layout software (can be a free online tool like Canva).
• Physics and Mathematics textbooks.
• Reliable online resources.

Detailed Step-by-Step for Activity Completion

1. Formation of groups of 3 to 5 students.
2. Division of the E-book into chapters, where each chapter will correspond to one of the following themes:
   • History of the SI.
   • Fundamental and derived units.
   • Conventions and symbols of the units.
   • Conversion between units.
   • Application of the SI in Physics, Chemistry, Biology, Engineering, etc.
   • Practical activities and problems, answers, and discussion.
3. Each group will select and become responsible for one or more chapters, depending on the group's size.
4. Students will start the project with in-depth research on their theme, using textbooks and online resources.
5. After the research, students should develop the chapter's content, including text, images, graphics, examples, and practical exercises. Creativity is highly encouraged, and the chapters should be written in a way that engages the reader.
6. Once the content is ready, students should use the graphic layout software to create the E-book. Each chapter should follow the same style and formatting to ensure the book's coherence.
7. In the end, all chapters should be compiled into a complete E-book.
8. The group should review the final E-book, ensuring that all chapters are complete, accurate, and well-formatted.
9. The final step will be the presentation of the E-book to the class, with each group explaining their chapter in a didactic and creative way.

Project Deliverables

After completing the project, students must deliver the complete E-book in digital format and make the presentation to the class. In addition, each student must individually write a report following the structure below:

1. Introduction: Brief introduction about the project, explaining the relevance of the International System and the reason for choosing their theme for the E-book chapter.
2. Development: In-depth exploration of the theory behind the worked theme, focusing on explaining the research and content creation process. It should present the methodology used in building the E-book and also discuss the results obtained.
3. Conclusion: Final reflection on what was learned during the project execution, including the challenges encountered and the importance of teamwork. It should also conclude on the impact of the SI on people's lives and in various disciplines.
4. Bibliography: List of information sources used for research and E-book development.

The report and the E-book should be submitted electronically on a pre-agreed date. Remember that this project requires planning, research, teamwork, writing skills, and graphic design. Manage your time well to ensure that all project steps are successfully completed and that the E-book reflects your effort and dedication.