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Topic 5. What can
one do and why?
(Functions of the systems) |
The topic "What can one do " is one of the most difficult in the first grade. Try to arrange your class in such a way that the main idea is conveyed along various representative systems:1. Warm up (Card Index for the First Grade)
1. The teacher demonstrates what the kids should do.
2. One of the students (or the whole class) says what should be done.
3. The kids independently do the exercises.
2. Homework check-up
3. Introduction to the lesson
Emil has a new riddle for you.
While measuring small kids' temperature the
doctors have a problem: a child can't wait till as long as needed.
What should be done?
You will be helped by:
A kind.........................
He is sitting under the tree,
Come to be treated
A cow and a wolf.....[Translation Note: This is a fragment of a popular Russian poem for the children "Doctor Powderpill". Every child in Russia is supposed to know this kind-hearted character.]
Draw a picture of what your new assistant can do. |
4. Main topic
Name parts of a pen, that helps to write .............................
And can you write without a pen?
Prove it .....................................................................................................
.............................................................................................................................................................
This task prepares the kids to perceive one of the central and difficult notions - perfection. An ideal system is a system that does not exist but its function is performed. We will perform this activity not once. For the first grade students it is enough just to remember that any system is created to perform a certain function. It can be performed by other systems and this is often used in solving problems. As a rule systems have many functions. To put it another words, the more resources the system have the more functions it can perform.
A function is what the system is meant for. Each system can perform many functions depending on different properties. |
This task is one of the variations of the previous one. It is arranged in a form of a game. The kids are taking part in the game very emotionally. The image that appears helps to memorize rather complicated notions.
We mark out the subsystems and their properties,
which are necessary for performing this or that function. We try
to give them to the Mouse without changing him. We realize that every
time that something does not fit.
"I wish I could howl like a bear."
................................................................................... .................................................."I wish I could fly like a swallow".
................................................................................... ..................................................I wish I could swim like a duck.
................................................................................... ..................................................I wish I could show off like a peacock.
................................................................................... ..................................................
Now we draw the pictures of the Mouse
with the parts from other animals.
- The Mouse got any: "I am a mouse and
I can't howl like a bear, but a bear can't squeak like me,
a mouse. I can't fly like a swallow but a swallow can't nibble thin
branches like me, a mouse. I can't swim like a duck but a duck can't
dig holes like me, a mouse"
We draw a conclusion that every system is created by a human being or by Nature in such a way that it can carry out his job better than others. And it is very important to use correctly various instruments.
5. Psychotechnical and developing games
The game "Masha, the Loser"
- Every system has its own work, its
own function. But sometimes a system has to perform not only its
own work but to do something rather unusual. And a person does not
care, what is more important that the work he has planned should be well
accomplished.
Once an amazing story happened to Masha.
On a fine winter morning she as usual was in a hurry going to school.
Everybody called Masha a Loser because she would lose things all the time.
That morning Masha lost her hair clip. Masha had long hair and she
couldn't without her clip. What should she do?
- To tie up by the ribbon.
- It means that a ribbon and a hair
clip may perform the same work, the same function. What is it?
- To hold the hair.
- To make a beautiful hairstyle.
- To hold the hair seems more accurate.
And can you devise other systems, that can hold the hair.?
- A scarf.
- A band.
- Any rubber string.
- A shoe lace.
- Maybe a grass or a flower garland.
- Good guys. And now play in groups.
A group of 3-4 kids is given a task: one of
the participants loses something. And the others give him a hint
what system can replace the lost one.
Thus, you are convinced that every system
may carry out many different functions, and it is necessary to see in it
those properties or parts which will help in this or that work.
6. Activities on speech skills developing, producing the creative product
Each of you has a piece of white paper on
your tables. Show me in 3 minutes how you can use this paper in a
very unusual way.
Mainly the paper is used for constructing a plane or making a snow flake. After reminding of other properties, other ways of using it. You can show them how to make origami.7. Summing up
Check, how the kids understood the notion of a function. They shouldn't mix up functions and properties.
[Translation Note: Lesson 2 of this Topic is missing in the text. The Author's response to the Editor: Topics 4 to 6 are given in a little abbreviated variant. They are complemented by plays and problems in exhibit. I can send this exhibit on E-mail if it is necessary. (Feb. 28, 2001)]
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Last updated
on Feb. 28, 2001. Access point: Editor: nakagawa@utc.osaka-gu.ac.jp