1. It is important to make your child interested in science from an early
age. Most young children ask a lot of questions and you should give careful
scientific answers. Don't only give facts but try to give explanations as
well. 2. Science is not just knowledge; it is a way of
thinking, a method of finding out about the world. We see something. We try to
explain it, and we test our idea by setting up all experiments. One day you come
home and find the plant on the table has fallen over. You think it might be the
wind from the open window or the cat. So you close the window, but leave the cat
in and see what happens (you can also try leaving the window open and shunning
the cat out). Of course, you remember there may be a third
explanation. 3. Ask your child to get a piece of string, some
salt, a glass of water and an ice cube (冰块). Tell her to put the ice in the
water, and then put one end of the string on the ice, leaving the other end over
the side of the glass. Put a lime salt on the ice, wait a minute, and then pull
the string, it should be attached to the ice. Ask the child: "what has
happened?" 4. Probably she won't know. Ask her whether fresh
water or salt water freezes into ice first. If you live near the sea and have a
cold winter, she should know fresh water freezes first as she will have seen
that happen. Show her how to test the idea by half-filling two paper cups with
water. Then put them in the icebox and check every three minutes. Write the
results in a table. The conclusion will be that salt changes the behavior of
water, thinking about the string, we see the salt turned some of the ice into
water. Then the salt went away into the water and the ice froze again leaving
the string attached. 5. Then you can ask, "Will water with salt
boil at the same temperature as water without salt?" She can think, tell you her
idea and (taking care the heat) you can test it in the kitchen.
A. What exactly is science. B. How do you find an
explanation. C. What topics do you need. D.
How do you answer your child's questions. E. Where does your
child study science. F. How do you set up the experiment on
salt and water.
填空题
Paragraph 1 ______?
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Paragraph 2 ______?
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Paragraph 3 ______?
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Paragraph 4 ______?
填空题
When your child asks you questions, you should give her ______.
A. the icebox
B. the ice
C. science answer
D. the experiment
E. the world
F. water
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We set up experiments to test our ideas about ______.
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In the experiment, one end of the string was attached to ______.
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the experiment shows that salt changes the behavior of ______.