Contextualization

Hello, young mathematicians!

Are you ready to embark on an amazing mathematical adventure? In this project, we will explore the wonderful world of Addition and Subtraction Problems. But before we begin, let's understand a little bit about why this subject is so important.

Addition and subtraction are present in many situations in our daily lives. When we go shopping, for example, we use addition to add up the value of several products and subtraction to find out how much change we will receive. Or when we divide a cake between friends, we use subtraction to find out how much is left for each one.

And it's not just in practical life that these operations are useful. In mathematics, they are the basis for many other concepts, such as multiplication and division. In addition, solving addition and subtraction problems helps us develop skills such as logical reasoning, analytical thinking, and even time management.

Introduction

Addition is an operation that allows us to combine two or more quantities to get another quantity. For example, if we have 3 apples and add 2 more apples, we will have a total of 5 apples. Subtraction, on the other hand, is an operation that allows us to remove one quantity from another. For example, if we have 5 apples and remove 2 apples, we will have a total of 3 apples.

But how can we use these operations to solve problems? Let's understand with an example: "Maria had 5 candies and won 3 more. How many candies does Maria have now?". To solve this problem, we need to use addition, as we have to add the 5 candies that Maria already had to the 3 that she won. The total will be 8 candies.

In another example: "João had 8 candies and ate 4. How many candies does João have now?". Here, we need to use subtraction, as we have to subtract the 4 candies that João ate from the 8 that he had. The total will be 4 candies.

And in our project, we will solve many problems like these, but in a much more fun and interesting way!

So, are you ready to become real math detectives? Let's go!

Practical Activity

Activity Title: Math Detectives: The Hunt for the Missing Numbers

Project Objective

The objective of this project is to allow you and your colleagues to become mathematical detectives, solving addition and subtraction problems in a super fun and practical way. In addition, we want you to practice collaboration skills, time management, and critical thinking.

Detailed Project Description

You, math detectives, will be challenged to solve five mathematical mysteries. Each mystery is an addition or subtraction problem that needs to be solved. But, hold on! It won't be an easy task. To solve each mystery, you will need to gather clues, decipher puzzles, and work as a team.

Required Materials

To carry out this project, you will need:

1. Paper and pencil to write down the clues and calculations.
2. Computer or tablet with internet access to access the puzzles.

Step by Step

1. Team Formation: First, you will be divided into teams of 3 to 5 detectives. Each team will receive a detective name, such as "The Smart Mathematicians" or "The Super Adders".

2. Reading the Mystery: Then, each team will receive a mathematical mystery. Read the mystery together and discuss what you need to do to solve it.

3. Clue Gathering: After understanding the mystery, it is time to collect clues. The clues can be in the form of riddles or even drawings. Write down all the clues you find.

4. Solving the Mystery: Now, with the clues in hand, it is time to solve the mystery. Use the clues to set up the addition or subtraction operation and find the answer.

5. Presentation of the Solved Mystery: When you solve the mystery, write the answer on a paper and prepare a presentation for the class. In the presentation, you should tell the mystery, show the clues you found, and explain how you used the addition or subtraction operations to solve the problem.

6. Repeating the Steps: Repeat steps 2 to 5 for the other four mysteries.

Remember, detectives, the key to success is collaboration. Work together, help each other, and don't be afraid to ask for help when you need it. Good luck, and may mathematics be with you!

Delivery Format

Each team must submit a notebook containing the notes on the clues, the calculations made to solve the mysteries, and a detailed description of how they arrived at the answer to each mystery. In addition, each team must give an oral presentation to the class, in which they will present the solved mysteries and how they arrived at the answers. The presentations will be held at the end of the week.