Introduction

Hello, little mathematicians! Today we are going on a journey to better understand the measures of Capacity and Mass. Did you know that we use these measures every day? When we cook, when we shop at the supermarket, even when we play with modeling clay, we use the mathematics of measures. Are you ready to learn how to use them better?

Capacity is the measure we use to find out how much liquid fits in a container. It can be measured in liters (L) or milliliters (mL). Mass, on the other hand, is the measure we use to find out how much an object or a substance weighs. It can be measured in kilograms (kg) or grams (g).

Contextualization

Have you ever stopped to think about how Mathematics is present in our daily lives? When we go to the supermarket, for example, we use capacity and mass measures all the time. When we buy a bag of rice, we are looking at the mass measure, which tells us how much the rice weighs. And when buying a soda, we are looking at the capacity measure, which tells us how much liquid is inside the bottle.

Now, imagine that you are the manager of a supermarket and you need to organize the product shelves. For that, it is very important to know the capacity and mass measures of each product, isn't it? And if you are a chef, you will need to know the right measures to prepare your delicious recipes!

Mathematics is a valuable tool that helps us better understand the world around us. Understanding capacity and mass measures is a big step towards becoming a master in the art of using Mathematics in everyday life. Are you ready to embark on this adventure together?

Practical Activity

Activity Title: "Math Supermarket"

Project Objective:

This project aims to allow students to experience the practical application of capacity and mass measures, as well as develop skills such as teamwork, communication, problem-solving, critical thinking, and creativity.

Detailed Project Description:

Students, divided into groups of 3 to 5, will create a "Math Supermarket" inside the classroom. They will be responsible for creating product packaging, assigning capacity and mass measures to these packages, and finally, creating a product catalog with their respective prices in a fictional currency. The activity will also involve shopping and cashier change.

Required Materials:

1. Cardboard or cardstock to create product packaging.
2. Ruler and pencil to make measure markings.
3. Blunt scissors and glue to build the packages.
4. Rice, beans, flour, salt, sugar, water, etc. (to be used as real products, but in small quantities).
5. Kitchen scale (or an improvised scale with two bowls and objects of known weights, such as books, for example).
6. Measuring cups (preferably in ml) to measure capacity.
7. Fictional coins or bills to represent money.

Detailed Step-by-Step:

1. Group Formation and Task Division: Students will be divided into groups, and each group will choose a "supermarket manager" who will be responsible for organizing the group's work.

2. Packaging Creation: With the help of the ruler and pencil, students will draw and cut out packages of different sizes to represent different products. The packages should be made with different capacities and masses (for example, a milk carton that can hold 1L of capacity and 1kg of mass, and a cookie package that can have 500mL of capacity and 500g of mass).

3. Assignment of Measures: Students will assign capacity measures (liters and milliliters) and mass measures (kilograms and grams) to each created package. They should be creative in choosing the measures but always remembering that they must make sense for the capacity and mass of the product.

4. Catalog Creation: Students will create a product catalog for the supermarket. Each product must have a name, an image (which can be a drawing made by the students), and the price in fictional currency. They should think of prices that are realistic in relation to the capacity and mass measures of the products.

5. Shopping: Each group will have the chance to "go shopping" at the other groups' supermarket. They will have to choose the products, checking the capacity and mass measures, and pay the corresponding amount in fictional coins.

6. Shopping Record: Students must record the purchases they made, noting the products, the capacity and mass measures, the prices, and the amount of money they spent.

7. Change Calculation: After the purchases, students must calculate the change they would receive if they had paid with an amount greater than the total value of the purchases.

8. Project Presentation: Finally, the groups must present the "Math Supermarket" to the class, explaining the creation process, the measures used, the purchases made, and the change calculated.

Delivery Format:

The project will be delivered in two ways: first, students will present the "Math Supermarket" to the class, explaining the creation process and the activities carried out. Second, the shopping records and change calculation will be handed to the teacher for individual evaluation. Remember, the most important thing is to have fun while learning together!