Context:

Rounding is a mathematical process by which numbers are approximated to a specified or closer value based on specific criteria. For example, if we have the number 23.78 and we want to round it to the nearest whole number, we get the value 24. This concept is often used in many areas of everyday life, such as finance, engineering, physics, statistics, to name a few.

The mathematics of rounding is truly a fascinating topic. Initially, it may seem like a mere technique to simplify numbers, but as we deepen our knowledge, we will realize that this technique opens up a whole new dimension on how we view and work with numbers. This project will allow us to explore more about the concept of rounding, its rules, and applications in daily life.

Rounding numbers is not just a simplification technique, but also a powerful tool in data analysis, finance, and many other fields. For example, in the world of finance, numbers are often rounded to facilitate the understanding of the data presented. Without rounding, numbers can become too complex and difficult to understand and compare. Therefore, the ability to round numbers correctly is an essential skill that we should all learn.

To start off well in this project, I suggest you consult the following resources:

1. Simple Mathematics: Rounding Numbers
2. Rounding of Decimal Numbers - Mundo Educação
3. Rounding Concept - Brasil Escola

These resources will help you better understand the concept of rounding and provide the theoretical foundations we need to carry out our project.

Practical Activity

Activity Title: The Magic Candy Store

Project Objective:

The main objective of this project is to apply the concept of rounding in the context of a practical activity, stimulating teamwork, problem-solving, and communication.

Detailed Project Description:

In groups of 3 to 5 students, each group will be responsible for managing a 'Magic Candy Store'. In this store, there are various types of magic candies, each with different prices and quantities. Each group must decide which candies to buy based on a limited budget, considering that all purchases need to be rounded to the nearest whole number.

Required Materials:

• Price cards for the candies (which you must create)
• Paper tokens to represent money
• Calculators (optional, to verify your calculations)

Step-by-Step for Activity Execution:

1. Each group must first understand the concept of rounding and its rules. This is an essential step to start the project. Use the resources provided in the contextualization section to help you understand the concept.

2. After that, each group must create a list of different candies for their store, including the candy's name, quantity, and price. Remember, each price must be a decimal number.

3. The next step is to round the prices to the nearest whole number. Each group must apply the rounding rules they have learned.

4. Now, each group has a budget of R$100 (represented in paper tokens) to spend on candies for their store. They must use their rounding skills to decide which candies to buy.

5. Finally, each group must present their store to the class, explaining their choices and how they used rounding to make their decisions.

Project Deliverables:

At the end of the project, each group must prepare a report detailing their activities, including:

• Introduction: The group must contextualize the theme, its relevance and real-world application, as well as the objective of this project. They must also express the importance of rounding in their context of daily life.

• Development: The group must explain the rounding theory, describe the activity in detail, indicate the methodology used, and present and discuss the results obtained.

• Conclusion: The group must conclude the work by summarizing their main points, explaining what they learned from the activity, and drawing conclusions about the project.

• Bibliography: The group must indicate the sources they relied on to work on the project: the resources proposed in the contextualization section, as well as any other materials they consulted.

When writing the written document, students should focus on showing not only that they understood the theoretical material, but also how they applied such theory in practice during the activity. The document must be submitted within a one-month deadline.