Розробка бінарного уроку ( англійська та біологія ) з теми " Око "

Water glasses:  Have a set of glasses with differing amounts of water in them.

T 1: Good morning! Nice to see you

   Look at the table. What can you see there?

Ss :Some glasses of water

T1: Close your eyes and listen carefully.

T taps the glasses with a pencil

T1: .  Do the glasses sound the same or different?  

Ss : They sound different because they have different amount of water

T1: How do you know that they are glasses with water? What helps you to understand it?

   How do you know that they sound different? What do you use to define it?

Ss: Our eyes help us understand that the glasses are with water and our ears let us define that the sound is different

T2: You’re right.. We use our senses every day to identify sights, sounds, smells, tastes. They help us to enjoy our food, the sound of music, the beauty of a sunny day and so on.

The senses appear on the screen

T2 : Today we are going to talk about one of the senses and it is the sight .We’ll review the structure of the human eye, work into teams and do some experiments.

T puts the tasks on the board

 You’ll need some terms for our lesson such as -

Key

T2 : Look at the screen and check your answers

T2: Do you know that the human eye is about 2.5 cm in length and weighs about 7 grams. Humans are very visual animals...we use our sense of sight to interpret much of the world around us. Do you remember how the human eyes work?

T1: We are going to watch the video about the work of an eye. Be very attentive such as then you’ll have to write the parts of the eye.

Video “ How Human Eyes Work “

Group of 4

T2 : We’re going to work into groups of 4 so let’s make the groups.

Using the words, and the table with the definitions, write the part of the eye. Your time limit is 3 minutes

Ss get the sheet with the eye

T1 : Time’s up. _________ show us your picture and read out the words

T1 :And now the most interesting part of our lesson. We will do some experiments to find out some more information how our eyes work. We go on working into groups. Each group will make its own experiment having 2 minutes only for the task. Then you will change your sits and make the next one and so on.

I. The Blind Spot

One of the most dramatic experiments to perform is the demonstration of the blind spot. The blind spot is the area on the retina without receptors that respond to light. Therefore an image that falls on this region will NOT be seen. It is in this region that the optic nerve exits the eye on its way to the brain.

This next image allows you to see another way your brain fills in the blind spot. Again, close your right eye. With your left eye, look at the +. Slowly move your head closer to the image. The space in the middle of the vertical lines will disappear.

II. Shifting Backgrounds, Shifting Images

Here's another way to demonstrate how different images are projected on to each eye. Look at an object in the distance (20-30 feet away), such as a clock on the wall. Close one eye, hold up your arm and line up your finger with the object. Now without moving your finger or your head, close the opened eye and open the closed eye. The object in the distance will appear to jump to the side...your finger will no longer be lined up. This shows that different images fall on each eye.

III. X-Ray Vision??

Do you have "X-Ray Vision?" You may be able to see through your own hand with this simple illusion. Roll up a piece of notebook paper into a tube. The diameter of the tube should be about 0.5 inch. Hold up your left hand in front of you. Hold the tube right next to the bottom of your left "pointer" finger in between you thumb (see figure below).

Look through the tube with your RIGHT eye AND keep your left eye open too. What you should see is a hole in your left hand!! Why? Because your brain is getting two different images...one of the hole in the paper and one of your left hand.

T2 : Which of the experiments did you like most f all?

  T1 : Sometimes the eyes play tricks with us which are usually called optical illusions. Pay your attention to the screen. There is some more information for you. Watch the video and complete the table     

Video 10 Mind Blowing Optical Illusions

Key

Summarising

T1: gets back to the tasks and says : Today we reviewed the structure of the human eye, worked into teams and did some experiments

      Have you found something new today?

     What was interesting for you?

      What was difficult?

Homework

To describe one of the optical illusions with the explanation how it works