Contextualization

Introduction

Physics is a science that seeks to understand and describe the universe and everything that happens within it. For this, measurements and comparisons between them are necessary. This is what we call 'Physical Quantities'. Physical Quantities are the attributes of a phenomenon, body, or substance that can be measured. These quantities can be classified into scalar quantities (which have only magnitude, such as temperature) and vector quantities (which have magnitude and direction, such as velocity).

The study of Physical Quantities is essential to understand the world around us. Much of our understanding of the universe is based on measurements and comparisons of these quantities. It is through this study that we are able to predict and explain natural phenomena, such as the fall of an object or the movement of planets, and create useful technologies, such as cars, airplanes, and electronic devices.

Contextualization

In our daily lives, we are constantly interacting with different physical quantities. For example, when we look at the time, we are interacting with the physical quantity of time. When we weigh ourselves, we are interacting with the physical quantity of mass. When we check the temperature, we are interacting with the physical quantity of temperature. Therefore, understanding what physical quantities are and how they work is essential to comprehend and interact with the world around us.

Furthermore, physical quantities are the basis for the creation and development of technologies. For example, knowledge about physical quantities such as electric current and electric voltage has allowed the creation of electronic devices, such as cell phones and computers. Understanding physical quantities related to light has enabled the development of technologies such as light bulbs and televisions.

Atividade Prática

Project: Measuring the World

Project Objective

The objective of this project is to enable students to apply the concepts of Physical Quantities in practical everyday situations. By the end of the project, students should be able to understand what physical quantities are, identify different types of physical quantities, and conduct experiments to measure these quantities.

Project Description

In the 'Measuring the World' project, students, in groups of 3 to 5, should choose three different physical quantities and design experiments to measure them. The experiments should be creative, playful, and should be conducted with easily accessible materials.

Required Materials

The materials required for the project will depend on the group's choice regarding the physical quantities to be measured and the experiments that will be used to measure them. However, it is recommended that students have access to:

• Paper and pen for notes and project development;
• Digital resources (computer, internet access) for research and final report development;
• Basic materials for experiments (ruler, scale, stopwatch, thermometer, etc).

Step by Step

1. Group Formation: Students should form groups of 3 to 5 members.
2. Choice of Quantities: Each group should choose 3 physical quantities for the project. It is important that the chosen quantities allow the practical execution of experiments.
3. Research: Students should research the chosen quantities and how to measure them. They must understand the theory behind the quantities and delve into the concepts.
4. Experiment Planning: Based on the research, groups need to plan and describe the experiments that will be conducted to measure each of the chosen quantities.
5. Experiment Execution: After planning, groups should conduct the experiments.
6. Final Report Development: Each group should prepare a report detailing their project.

Project Deliverables

Groups must submit a complete project report, containing:

1. Introduction: Should include a contextualization of the theme, the relevance of physical quantities, and the reasons for choosing the specific quantities worked on by the group.
2. Development: Should explain the theory about the chosen quantities, detail each experiment conducted, the methodology used, and finally present and discuss the results obtained.
3. Conclusion: Students should conclude the work by summarizing their main points, the learnings obtained, and the conclusions about the quantities worked on and the measurement process.
4. Bibliography: Should indicate the sources used for the project.

The submission of the written report serves not only to assess students' knowledge but also to evaluate competencies such as time management, communication, problem-solving, creative thinking, and proactivity.