Contextualization

In the Science discipline, one of the most fascinating and essential domains for our daily life is the study of Vision. The wonderful biological process by which we are able to interpret the light reflected in our environment to form clear images of the world around us.

In this project, we will delve deeply into the science behind this incredible process. Learning about the structure of the human eye, the role of light, and the conditions that can impact our vision.

Introduction

Vision is one of our five senses and, for many of us, it is the sense we use most frequently. To understand how vision works, we first need to understand the structure of our eyes. The human eye is a complex organ, composed of several different parts, each of them playing an essential function in capturing and interpreting light.

Light enters our eyes through the cornea, the clear front surface of the eye that begins to focus the light. This light then passes through the pupil, a hole in the iris, which adjusts to control the amount of light entering the eye. The light is then directed to the eye's lens which further focuses it before reaching the retina, where the light is converted into electrical signals to be processed by the brain.

But that's just the beginning. We will also explore the different types of cells in the retina that allow us to see colors and details, how vision is affected under different lighting conditions, and how certain diseases and conditions can affect our ability to see.

Practical Activity: 'Exploring Vision'

Project Objective

Participants will create a three-dimensional (3D) model of a human eye to explore the structure and functions that contribute to vision. Additionally, the group will conduct a series of experiments to understand how light and shadow influence the vision process.

Detailed Project Description

Part 1: Building the 3D Model of the Human Eye

Students will create a three-dimensional model of the human eye, marking and explaining each part and its function in vision.

Part 2: Experiments with Light and Shadow

After building the model, students will conduct a series of experiments to understand how different light and shadow conditions affect vision.

Required Materials

1. Styrofoam balls or recyclable materials
2. Colored paints
3. Paintbrushes
4. Modeling materials (cardboard, clay, etc.)
5. Flashlight
6. Fabrics of different opacities
7. Books and online resources for research

Step by Step

Part 1: Building the 3D Model of the Human Eye

1. Divide the class into groups of 3 to 5 students.
2. Each group should conduct research to better understand the structure of the human eye.
3. Based on the research, students should design and create their representations of the human eye in 3D, marking and explaining each part.

Part 2: Experiments with Light and Shadow

4. The group should design a series of experiments to test how different light and shadow conditions affect vision.
5. The group should document their hypotheses, methodologies, and observations for each experiment, as well as draw conclusions about the results.

Project Deliverables

Groups must deliver their 3D model of the human eye, along with a detailed report that includes:

1. Introduction: An overview of vision and its importance, the relevance of understanding the structure of the human eye, and the project's objective.
2. Development:
   • A detailed description of the model construction, explaining each part of the eye and its function in vision.
   • A detailed account of each light and shadow experiment, including the hypothesis, methodology, and observations of each experiment.
3. Conclusion: A reflection on the main learnings from the project and a discussion on the implications of these findings.
4. Bibliography: A list of resources used for research and project construction.

Group work is essential for this project, and students are encouraged to divide tasks and collaborate on all parts of the project. This project is estimated to be completed in 12 hours per student; therefore, students must manage their time effectively to complete all parts of the project in a timely manner.