Your Vision & Hearing

HEALTH EDUCATION - Lesson 5 - Week 5/10

Growing Up Healthy (4)

HPE Lesson Plans - Health - KHE, 1HE, 2HE, 3HE, 4HE, 5HE

Safety | Mental, Social & Emotional Health | Substance Abuse & Disease Prevention | Growing Up Healthy

4TH GRADE VIRTUAL HEALTH

L1: You Are Growing Cell by Cell| L2: Your Brain & Nervous System: The Control Center for Growth | L3: Your Skin & Its Care | L4: Your Teeth & Their Care | L5: Your Vision & Hearing | L6: Your Posture| L7: Your Physical Fitness | L8: Nutrients & Your Digestive System | L9: Food and the Nutrients It Contains | L10: Using MyPlate | EXTRA: Understanding a Food Label | EXTRA: Preparing Food Safely

Growing Up Healthy

Your Vision & Hearing

See below for the following:

Standard(s), Essential Question(s), Big Idea(s)


LEARNING TARGET / SUCCESS CRITERIA

I will know, identify, and explain the causes of common vision and hearing problems.

I will know, describe, and demonstrate how to take good care of eyes and ears.

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PRE-INSTRUCTIONAL ACTIVITY

Vocabulary

pupil - a drug used to treat or cure a health problem

lens - a substance other than food that changes the way the body works (all medicines are drugs, but NOT all drugs are medicines)

retina - unwanted changes in the body caused by a medicine (e.g. adult take aspirin to relieve pain or reduce fever, but a possible side effect of aspirin is an irritated or upset stomach)

nearsighted - people trained to prepare medicines

farsighted - a doctor's order for a medicine (it has information such as the name of the medicine, how much you should take, and how often you should take it)

hearing loss - medicines that an adult can buy only with a doctor's order (each prescription medicine is meant for just one person / never take another person's prescription medicine as this can be dangerous to your health)


OPENING (Engage)

Main Idea

Taking care of your vision and hearing is important for your health.

Why Learn This?

Learning about you eyes and ears helps you make good choices about caring for them.



WORK PERIOD (Explore/Explain/Extend/Elaborate)

READ: Your Vision & Hearing


Imagine that you are at a carnival. You see a funny clown walk by. You hear the cheerful tune of a merry-go-round. You enjoy all the sights and sounds. Your vision and hearing help you appreciate the world around you.


What are some problems people have with vision?


To understand how vision works, look at the diagram of the eye below. Light bounces off objects, like the bird. The light enters the eye through a hole called the pupil (proo-puhl). Then the light passes through a clear, curved structure called the lens (LENZ). The lens bends the light to form an image on the back part of the eye. This back part of the eye is called the retina (REH-tuhn-uh). Nerves carry the image from the retina to the brain. When the image reaches your brain, you see the object.


In people with normal vision, the lens focuses images clearly on the retina. Not everyone has normal vision, though. Some people can see objects that are close to them, but they have a hard time seeing thinge that are far away. These people are nearsighted, In nearsighted people the eye focuses images in front of the retina. This causes a blurry image on the retina.

Other people can see things well when they look into the distance, but they have a hard time seeing things that are close to them. These people are farsighted. In farsighted people the eye focuses images behind the retina. The image from the retina that travels to the brain is blurry, too.


People who are nearsighted or farsighted may wear glasses or contact lenses. These artificial lenses focus images correctly on the retina. Glasses and contacts allow most nearsighted or farsighted people to see as clearly as people who have normal vision.

What are some hearing problems?


To understand how hearing works, look at the diagram of the ear below. Sounds, like the bird's song, travel in waves. Sound waves enter your outer ear and move through the ear canal. They hit the eardrum, which vibrates with the sound. The vibrations pass into the middle ear, where three tiny bones vibrate, too. These bones pass the vibrations to the inner ear. In the inner ear the vibrations are changed into nerve signals that travel to the brain. When your brain receives the nerve signals, you hear the sound.


Loud sounds from heavy traffic, noisy machines, and blaring music can permanently damage your inner ear. Listening to loud sounds is a main cause of hearing loss. Hearing loss has occurred when a person can no longer hear sounds that he or she was once able to hear.

If you are in a noisy place where you must shout to be heard by others, the sounds around you may be harming your ears. If your ears ring when a noise stops, some harm has occurred already. Your ears probably will recover from hearing loud sounds once, but listening to loud sounds again and again will cause hearing loss.

How can you protect your eyes and ears?


You can't prevent all vision and hearing problems. For example, some people are born with vision and hearing problems. But you can prevent many injuries. Follow these safety rules:



REMEMBER...Taking care of your vision and hearing is important for your health. Learning about you eyes and ears helps you make good choices about caring for them.


CLOSING (Evaluate)


Standard(s)

HE4.1a - recognize the relationship between healthy behavior and disease prevention

HE4.3a - identify the characteristics of valid health information, products, and services

HE4.3b - list resources from home, school, and community that provide valid health information

HE4.5b - describe the possible consequences of an unhealthy decision and healthy alternatives when making a health-related decision


Essential Question(s)


Big Idea(s)


RESOURCES / INSTRUCTIONAL MATERIALS


DCSD Board-Approved Instruction Materials


Technology