Contextualization
Introduction
Proportions are an essential part of mathematics and life. In our daytoday activities, we often use proportions without even realizing it. For example, when we are cooking, we often adjust the ingredients based on the number of servings we want to make. This is a reallife application of proportions.
In mathematics, a proportion is an equation that states that two ratios are equal. It can be written in the form of a/b = c/d
where a
, b
, c
, and d
are numbers. The concept of proportions is fundamental in algebra and is used in various other areas of mathematics, such as geometry, statistics, and calculus.
Solving proportions is a method used to find an unknown quantity in a proportion. When we have a proportion and we know three of its four quantities, we can use the method of solving proportions to find the fourth quantity.
Importance of Proportions
Proportions are used in various fields, including science, economics, engineering, and arts. In science, proportions are used to compare different quantities in chemicals, find out the concentrations, and also in physics to calculate forces, speeds, and distances. In economics, proportions are used to calculate taxes, discounts, and interests. In engineering, proportions are used in designing structures, machines, and circuits. In arts, proportions are used in creating realistic and accurate drawings and sculptures.
Understanding proportions is not only important for mathematical problemsolving but also in making sense of the world around us. By understanding proportions, we can make informed decisions and solve reallife problems more effectively.
Contextual Resources
To deepen your understanding and explore more about proportions, you can use the following resources:
 Math is Fun  This website has a clear and concise explanation of proportions with examples and interactive questions.
 Khan Academy  A series of video lessons and practice exercises on solving proportions.
 Book: "Mathematics: Its Content, Methods and Meaning" by A.D. Aleksandrov, A.N. Kolmogorov, and M.A. Lavrent'ev  A comprehensive book that covers the fundamental concepts of mathematics, including proportions.
Remember, understanding proportions is not just about memorizing formulas. It's about understanding the concept and applying it to reallife situations. Let's delve into the world of proportions and discover its beauty and relevance together!
Practical Activity
Activity Title: Proportions in Reallife Scenarios
Objective of the Project
The main objective of this project is to apply the concept of solving proportions in reallife situations. By doing so, students will not only reinforce their mathematical knowledge but also develop critical thinking, problemsolving, and collaboration skills.
Detailed Description of the Project
In this project, students will be divided into groups of 3 to 5 members. Each group will be given a set of reallife scenarios that involve proportions. The groups will have to identify the proportions, solve them, and explain their solutions in detail. The reallife scenarios will be diverse, covering areas such as cooking, shopping, construction, and art.
At the end of the project, the groups will present their solutions and findings to the class. This will enable students to not only learn from their own projects but also from the projects of other groups, thus promoting a collaborative learning environment.
Necessary Materials
 Reallife scenarios involving proportions (provided by the teacher)
 Calculator
 Notebook and pen for jotting down thoughts and working through problems
 Access to the internet or a library for research
Detailed StepByStep for Carrying Out the Activity

Group Formation and Scenario Distribution: The teacher will divide the class into groups of 3 to 5 students. Each group will be given a set of reallife scenarios.

Scenario Analysis: The groups will analyze the scenarios, identify the proportions involved, and write them down.

Proportion Solving: The groups will solve the identified proportions using the method of solving proportions. They will show all their calculations and explain their steps clearly.

Research: If the groups encounter any difficulties during the solving process, they can research more about the concept or ask for guidance from the teacher.

Report Writing: After solving the proportions, the groups will write a report detailing their findings. The report should follow the structure of Introduction, Development, Conclusion, and Used Bibliography.

Introduction: This section should provide a brief overview of the concept of proportions, its relevance, and the reallife scenarios assigned to the group.

Development: This section should detail the theory of proportions, explain the methodology used by the group to solve the problems, present and discuss the results obtained in a clear and organized manner.

Conclusion: This section should revisit the main points of the project, explicitly state the learnings obtained, and the conclusions drawn about the project.

Used Bibliography: In this section, the group should list all the resources they used to work on the project, such as books, web pages, videos, etc.


Presentation: Each group will present their project to the class. The presentation should include a summary of the project, the reallife scenarios, the identified proportions, the steps taken to solve them, and the results obtained.

Reflection and Discussion: After all the groups have presented, there will be a class discussion where students can reflect on the project, share their thoughts, and ask questions.
Project Deliverables

Solved Proportions: Each group will have to solve the proportions given in their assigned reallife scenarios.

Written Report: Each group will have to write a detailed report following the structure outlined above. The report should be neatly written and free from grammatical and spelling errors.

Presentation: Each group will have to prepare and deliver a presentation on their project. The presentation should be clear, concise, and wellstructured.

Class Participation: Each student is expected to actively participate in the group discussions, the project work, and the class presentations.
The project will take approximately one month to complete, with an estimated workload of 12 to 15 hours per student. The project will be graded based on the quality of the solved proportions, the written report, and the group presentation. The teacher will also evaluate the students' understanding of the concept of proportions and their ability to apply it to reallife situations.