Lesson+2

= __**The Senses**__ =

__**A video about the senses!**__
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__**Sense of Sight**__


Eyes provide the sense of sight Here is a diagram of the human eye - it has been called the most complex organ in the body. It provides the human body with vision and therefore is responsible for the sense of sight.

click on the link titled interactive eye - it is important to learn more about how the eyes work. Write down some facts you think are interesting on some paper Interacitve Eye - []

How Eyes Work- FACT! Eyes see everything upside down Look at the diagram to see how the eyes and brain work together toprovide a sense of sight Why don't you see things upside down? Well, your eye sends the picture to your brain, and your brain turns the picture the right way up and tells you what you are looking at. So you see things the right way up.

Optical illusion activities Look at these optical illusions and writedown the image you see first

Old lady or young lady? Music or girls face? count the black dots Rabbit or duck?

__**Sense of Hearing**__
Sounds go into my ears. Inside my ear, sounds hit an eardrum. Nerves tell my brain about the sound. My brain tells me what I am hearing.
 * Ears and Hearing **

**The outer ear**Sounds travel in waves through the air and into our ears. Inside the ears, the sound waves move along short tunnels.There is wax in the tunnels which helps keep the ear clean. The sound waves reach a thin layer of skin called the eardrum and it vibrates. **The middle ear**Behind the eardrum is the middle ear, where there are three tiny bones. These bones vibrate when the eardrum does. This makes liquid and hairs in the next part of the ear, the **inner ear**, move. **The inner ear**The liquid and hairs are in a curled tube called the cochlea (say //cock-lee-uh//). Messages about the vibrations move along nerves to the brain. The brain tells you what the sound is. As well as hearing, the inner ear helps us keep our balance. The liquid in the inner ear swirls about when you move. Nerves in the inner ear tell your brain which way you are moving, and this helps you to keep your balance. Interactive Ear- Click on the link to learn more about the sense of hearing []

Sense of smell


When we breathe, air goes into our nose through the nostrils. Inside the nose there are lots of tiny hairs. These hairs catch bits of dust that are in the air. Damp, sticky stuff called mucus traps more dirt and germs as they enter the nose. Nerves inside the nose take messages to the brain about the smells that come into the nose in the air. The brain tells what we are smelling

Click the link below about the sense of smell and answer the questions media type="youtube" key="dIDBG-UPRUI" height="315" width="420"

How do we pick up smells? What are impulses?

__**Sense of Taste**__


Taste buds probably play the most important part in helping you enjoy the many flavors of food. Your taste buds can recognize four basic kinds of tastes: sweet, salty, sour, and bitter. The salty/sweet taste buds are located near the front of your tongue; the sour taste buds line the sides of your tongue; and the bitter taste buds are found at the very back of your tongue. Everyone's tastes are different.

Believe it or not! Smelling food also helps us to taste our food!

Fun Facts

Reference website
 * We have almost 10,000 taste buds inside our mouths; even on the roofs of our mouths.
 * In general, girls have more tastebuds than boys.
 * Taste is the weakest of the five senses
 * Insects have the most highly developed sense of taste. They have taste organs on their feet, antennae, and mouthparts
 * Fish can taste with their fins and tail as well as their mouth

Interactive lesson on the sense of taste: click on the link to start the activity []

__**Sense of Touch**__




The body organ used for touching is the [|SKIN.] Every bit of skin all over our bodies, including our nails, is used for touching. The nerve endings in the skin send signals to the brain, the brain analyzes the signals and registers the effect of the touch, then signals the reaction to the rest of the body. Some sections of the skin are more sensitive than others. Click on the link below for an online learning activity quiz about the sense of touch []

NOW LETS GET ACTIVE- COMPUTERS AWAY!!!

You will be divided into small groups and each of you will be given a blindfold. There is 5 groups in total and as a group you will rotate around different tables - touch, smell, sight, hear and taste. This is what you will do at each table touch table- BLINDFOLDS ON! on this table there are a variety of items and materials that have different textures - with your blindfold on you feel the different items/materials and have a guess what they are. smell table- BLINDFOLDS ON! this table is filled with different things that have a particular smell- you must identify the correct object/food etc. using your sense of smell taste table - BLINDFOLDS ON!! on this table are lots of various foods - some yummy and some not- identify what the food is using your sense of taste hear table- BLINDFOLDS OFF!! its time to get musical! - the table has a bunch of different instruments that make different sounds - have fun with the music! sight table- BLINDFOLDS OFF!! on this table you will play around with sight using maginifying glasses and exploring and having fun with sight! once you have completed all the tables go back to your seats =**END OF LESSON! WELL DONE!!**=