Contextualization

Electric power is a crucial topic that allows us to understand how electrical appliances, which we use daily, consume energy. In our daily lives, a large part of activities depends on the use of electrical energy, whether it's to turn on a light bulb, charge a cell phone, or cook a meal.

In the real world, understanding electric power is important for various aspects, but one of them is particularly relevant: energy consumption. Knowing the amount of energy an appliance consumes allows us to calculate the cost of using that appliance and optimize our energy use. Furthermore, efficient use of electrical energy contributes to the sustainability of the planet by reducing our dependence on non-renewable energy sources.

High energy consumption is one of the greatest challenges faced by modern society. In turn, efficient use of electricity is one of the solutions to this problem. With knowledge of important concepts such as electric power, we can play an active role in this challenge by making informed decisions about how to consume energy in our daily lives.

In this project, you will have the opportunity to explore electric power, learn how to calculate the energy consumption of various appliances, and propose solutions to optimize energy use at school or in the community. In addition to learning important concepts about electricity, this project will also help develop important skills such as teamwork, problem-solving, and critical thinking.

We suggest that you start your research by looking at the following resources:

1. Oswaldo Cruz Foundation - Electric Power: Link

2. National Energy Conservation Council - Electric Power: Link

3. Energy Research Company - Electric Energy Consumption: Link

4. National Electric Energy Agency - Energy Saving Tips: Link

Practical Activity

Activity Title: Energy at the Tip of the Pencil

Project Objective

The objective of this activity is to provide students with a practical understanding of the concept of electric power and how it relates to energy consumption. Students should measure the energy consumption of different household appliances and propose a plan to optimize the use of electrical energy at their school or in the community.

Detailed Project Description

To carry out this project, students will be divided into groups of 3 to 5 people. Each group will be responsible for:

1. Selecting at least five different electrical appliances.
2. Noting the electric power of each appliance (usually, this information can be found on a label on the appliance itself).
3. Calculating the energy consumption of these appliances per day, week, and month (assuming an average daily use of 2 hours for each appliance).
4. Based on these calculations, creating a plan to optimize the use of electrical energy at school or in the community.

The project should be completed in approximately 15 hours of work per student, including research time, conducting experiments, analyzing results, and preparing the final report.

Required Materials

The materials needed for this project include:

1. Pencil and paper to note information and make calculations.
2. Calculator.
3. Internet access for research.
4. Electrical appliances with power information available for analysis.

Detailed Step-by-Step

1. Form groups of 3 to 5 students.
2. Each group should choose at least five electrical appliances to analyze.
3. Note the electric power of each chosen appliance.
4. Calculate the energy consumption of the chosen appliances per day, week, and month.
5. Research efficient ways to use energy and apply these concepts to create a plan to optimize energy use at school or in the community.
6. Write a report with the presentation of the calculations performed, the description of the proposed optimization plan, and the analysis of the impacts that this plan may have on energy consumption.

Project Deliverables and Connection to the Suggested Activity

Students should deliver a written report that should include the following topics:

• Introduction: Should include the contextualization of the theme, the relevance and real-world application, as well as the project's objective.
• Development: Should contain the theory behind electric power and energy consumption, a detailed description of the activities carried out, the methodology used, and the presentation and discussion of the results obtained.
• Conclusion: Should summarize the main points of the report, the learnings obtained, and the conclusions drawn from the project. Students should also reflect on how the acquired knowledge can be applied in their daily lives to promote a more responsible and sustainable use of energy.
• Bibliography: Indicate the sources used in the project such as books, web pages, videos, etc.

The reports will be evaluated based on the understanding of the theory, the accuracy of the calculations, the clarity and coherence of the proposed optimization plan, as well as the overall quality of the writing.