Sensory Organs: The Eye

Introduction

Hello, young learners! Today, we're going to explore the amazing world of our eyes, which are our sensory organs for seeing. Our eyes are like special cameras that help us see all the wonderful things around us.

Just imagine a world without eyes. We wouldn't be able to enjoy the vibrant colors of flowers, the beauty of a rainbow, or even the smile on a friend's face. Our eyes allow us to see everything from the tiniest details to the biggest landscapes.

During our lesson, we will learn how our eyes work and why they are so important. We will discover the different parts of the eye and how they help us see. We'll also explore how our eyes communicate with our brain to make sense of what we see.

So, get ready to open your eyes to a world of knowledge about this incredible sensory organ. Let's learn together and appreciate the gift of sight that our eyes give us every day!

Task

Henry fell down the stairs leading to the front entrance of his home. Since then his grandson, Harrison has been staying with him and he began to notice a few things. His grandfather put salt in his tea instead of sugar in the canister next to it. He answered the telephone upside down and when they were visiting a restaurant, he accidentally walked into the ladies bathroom. However, the ladies were mesmerized by his blue eyes and escorted him back to Harrison who was waiting at the table. Harrison believes that his grandfather is having trouble with his vision but he cannot detect why.

Harrison is eager to provide clear and understandable explanations to his grandfather. To ensure his conclusion is well-informed, it is important for him to address the following inquiries about the eye. By learning about these key aspects, Harrison will be better equipped to communicate his findings effectively to his grandfather. 

  1. Which components constitute the eye?
  2. How do these components interact to create an image?
  3. What is the reason behind the difference in eye color between Harrison and his grandfather?
  4. People often compare the eye to a camera, in what ways are they alike?
  5. What is the definition of cataract?
  6. Could you explain myopia and hypermetropia?
  7. What is astigmatism and how does it affect vision?
  8. What is glaucoma and how does it affect the eyes?
Process

Harrison aims to determine his grandfather's specific eye condition. To commence his examination, he needs to take the following steps:

  1. Examine how the various components of the eye collaborate to generate an image:

    https://www.youtube.com/watch?v=eDIma_Ai1Rc

     

  2. Why do we have different Eye colors?

    https://www.youtube.com/watch?v=YQwQ-6tZXbg

     

    3. Compare the functions of the Eye to the functions of a camera: 

    https://youtu.be/OGqAM2Mykng

    4. Determine the factors resulting in cataract: 

    https://www.mayoclinic.org/diseases-conditions/cataracts/symptoms-causes/syc-20353790

     

    5. Determine the factors resulting in myopia and hypermetropia: 

    https://www.aoa.org/patients-and-public/eye-and-vision-problems/glossary-of-eye-and-vision-conditions/myopia

    6. Determine the factors resulting in astigmatism: 

    https://www.mayoclinic.org/diseases-conditions/astigmatism/symptoms-causes/syc-20353835

    7. Determine the factors resulting in glaucoma: 

    https://www.youtube.com/watch?v=_xpKQrjxy2o

    Effective detectives typically take notes to facilitate a later review of information. Additionally, tables, sketches, and graphic organizers can be advantageous.

Evaluation

Activity:

  1. Read the following scenario:

Maria has been experiencing eye strain, headaches, and difficulty seeing objects up close. She has also noticed that her vision is blurry when looking at a distance. She has not had an eye exam in over two years.

  1. Answer the following questions:

a. What could be causing Maria's symptoms?

b. What are some risk factors for the development of eye problems?

c. Why is it important for Maria to have regular eye exams?

  1. Write a paragraph explaining the importance of taking care of your eyes and ways to prevent eye problems.
Scoring Rubric Points
0 - No response or incomplete answer 0
1 - Incomplete answer with some relevant information 3
2 - Adequate answer with relevant information 6
3 - Thorough answer with detailed information and explanation 9
4 - Comprehensive answer with extensive information, explanation, and examples 12
Maximum Total Points 12

 

Conclusion

In this webquest, you learnt the parts of the eye and how they work together to form an image. You also learnt how the eye and a camera have similar structures and function and how eye color is generated. This webquest further explored defects of the eye that included cataract, myopia, hypermetropia, astigmatism and glaucoma while fostering scientific skills of inquiry, recording, listening and research. 

Credits
Teacher Page

What are the essential parts of a WebQuest?

The following six components are the essential parts of a WebQuest:

  • Introduction – An introduction explains a situation and provides background information on the topic. Introductions are expected to be entertaining yet outline the learning goals to students.
  • Task - The task is a formal description of what students will have accomplished by the end of the WebQuest. Teachers must locate resources for a particular topic on the web. The teacher should then use that activity which should have a combination of the information found in the resources. According to the Educational Broadcasting Corporation, “developing this task -- or the main research question -- is the most difficult and creative aspect of creating a WebQuest.”
  • Process - The steps of the WebQuest are specifically addressed during this step. This is also where the students are instructed to organize the information. Information is typically organized in links which are embedded in each step.
  • Resources – This section usually consists of the resources required to complete the WebQuest.  They are typically hyperlinked directly in the WebQuest to ensure the student uses the correct web resources. Typical web resources may include websites, posters, videos and so forth.
  • Evaluation – Evaluations assist students in grading themselves on how successful they were on the WebQuest. Most of the time, evaluations are in the form of rubrics.
  • Conclusion – In the conclusion, students are able to reflect on the WebQuest.