Contextualization

Hello, class! Let's start a very interesting journey through the world of notable percentages. But first, do you know what a percentage is? We can say that a percentage is a way to represent a part of a whole, based on 100 equal parts. It is very useful in our daily lives because it helps us better understand the relationships between quantities and make decisions.

Now, let's talk about notable percentages. Have you heard of 25%, 50%, and 75%? These are some of the notable percentages we will explore. Why are they called notable? Because they frequently appear in various situations and are easy to calculate and understand.

Introduction

Percentage

Percentage is a way to represent a part of a whole. It is widely used in everyday situations, such as when we go shopping and see that a product is 50% off, or when we study and want to know how many questions we answered correctly on a test, representing it as a percentage.

Percentage is represented by the symbol "%". For example, if we have 50% of something, it means we have half of that something. If we have 25% of something, it means we have a quarter of that something.

Notable Percentages

Notable percentages are values that frequently appear in various situations and are easy to calculate and understand. The most common notable percentages are 25%, 50%, and 75%. Let's understand why they are notable.

The percentage of 25% is widely used when we want to divide something into four equal parts. The percentage of 50% is used when we want to divide something in half, that is, into two equal parts. And the percentage of 75% is used when we want to divide something into three equal parts.

These percentages are very useful and appear in various situations in our daily lives. For example, if we divide a pizza into four equal parts, each part will have 25% of the pizza. And if we buy a product with a 50% discount, we are paying half of the original price. If we have 75% correct answers on a test, it means we answered three out of every four questions correctly.

Is it clearer now? These are very important and practical concepts, so let's explore them in our project!

Practical Activity: Exploring Notable Percentages

Activity Title: "Let's Share the Pizza!"

Project Objective:

• Apply the concept of notable percentages in a real situation: dividing a pizza!
• Encourage teamwork by defining roles and sharing responsibilities.
• Promote critical thinking and problem-solving through the development of strategies for distributing pizza slices.

Detailed Project Description:

In this project, you will simulate the division of a pizza to understand and apply the notable percentages: 25%, 50%, and 75%. You will work in groups of 3 to 5 people. Each group will receive a pizza, which will be divided according to the notable percentages. You will need to calculate how many slices correspond to each percentage and then distribute them among the group members.

Required Materials:

• Paper and pen for notes and calculations.
• A pizza (it can be a cardboard pizza, made by yourselves, or a printed image of a pizza).

Project Step-by-Step:

1. Group Formation: Form groups of 3 to 5 people. Remember, teamwork is essential!

2. Assignment of Roles: Each group member should receive a role, such as: "Calculator," "Note-taker," "Portion Distributor," "Head Chef" (responsible for supervising the pizza division), etc. You can create other roles if you wish!

3. Study of Notable Percentages: The group should study the notable percentages together: 25%, 50%, and 75%. Discuss and develop strategies to calculate how many pizza slices correspond to each percentage.

4. Pizza Division: Now is the time to put into practice what you have learned! Using the calculations made, divide the pizza according to the notable percentages. Remember that each slice should be very equal so everyone can enjoy!

5. Activity Record: The group's "Note-taker" should record the calculations made and how the pizza was divided. You can draw, write, or even take photos to keep as a memento!

6. Presentation of the Work: Each group will present to the class how the pizza division process was and the calculations they made. Remember to explain what notable percentages are and how they helped in the pizza division.

Delivery Format:

Each group must deliver the record they made (drawings, notes, photos) and present the work to the class. You can choose to make a poster, a poster, or even a slide presentation. The important thing is that everyone in the group has the chance to participate and that the work is well-organized and explained. Have fun learning about percentages!