Transcript Which is the wagging dance?

Unit14 Zoology
The Language Of Honey-bees
蜂
作者: 罗隐
不论平地与山尖，无限风光尽被占。
采得百花成蜜后，为谁辛苦为谁甜。
Pre-reading
1. How do animals communicate?
Strange noise
Animals communicate by
Body language
2.What kind information do they
communicate?
How they feel
Animals communicate
If they are angry or friendly
about
Where there is food or danger
3.If I were a zoologist, what Their languages
would you study about
animals communication?
behaviors
Animal living styles
Skimming
Please skim the passage to answer the questions
below.
1. How do honey-bees communicate with each other?
2.What are they telling each other?
Keys:
1.They do different dances, a circle dance and a wagging
dance.
2.They are able to tell each other that food has been found
and how far away the feeding place is.
Scanning
Please scan the
passage to tell me how
many parts it is
divided into and what
the main idea of each
part.
Skimming
Part1(Para1) The honey-bee has
interested scientists most because of
their communicating “language”.
Karl Von Frisch’s
Part2(Paras2-7)
experiments on honeybees.
Karl Von Frisch’s won the
Part3(para8) Noble Prize for his work in
studying the communication
of animals.
Details
Please read the passage carefully and
answer the questions below.
1. Where do you
find bees?
In the wild,
in gardens,
fields or
orchard.
Details
2.Where
do bees
live?
In a hive.
Details
3. What do bees make?
honey
Details
4. When
Professor von
Frisch places
little dishes of
honey on a
table, what was
he puzzled by?
As soon as one
bee discovered
the honey, many
more came to it
one after
another in a
short time.
Details
5. What did
Karl Von Frisch,
a scientist from
Austria, spend
many years
researching?
He spent such
much time
researching the
amazing ways
honey-bees
communicate in
their dark hives.
Details
6. In order to
solve the
puzzle, how
did he do?
Von Frisch built
special hives, each
with only one
honeycomb. He built
a transparent wall
through which he
could observe what
went on inside.
Details
7.In order to tell the bees apart, what did he do?
He painted some bees
with little dots of color.
Details
8. What did he observe through the
transparent wall?
He observed a marked bee
returned to the hive from the
feeding table, performed a dance
on the surface of the honeycomb
and surrounding bees copied his
movements. Then the bees left the
hive and went to the feeding place.
Details
The circle dance
seemed to
communicate
news of food.
9.What did the
circle dance
seem to
communicate ?
Details
10.Von
Frisch
assume that
the dance
conveyed
more
information.
To clarify the
assumption,
what did he
do?
He set up two
feeding places. One
was close to the hive,
the other much far
away. He marked all
the bees that came to
the nearby feeding
place blue, and all
the bees that went to
the far-away place
red.
Details
1I.When the
bees came
back to the
hive, what
did von
Frisch see ?
All the bees that
that had been at
the nearby
feeding places
were doing circle
dance While the
bees that had
been at the
distance feeding
place were doing
wagging dance.
Details
12. We know honeybees communicate by a
circle dance and a
wagging dance. Can
you describe how the
circle dance performed ?
What about the
Wagging dance? Can
you tell me which
picture is the circle
dance? Which is the
wagging dance?
The circle dance
First it made a circle to the right, then to the left. It
repeated these circles over and over again.
The wagging dance
The dancer ran in a straight line, wagging from side to side.
Then it turned in a semicircle, ran straight again, and
turned in another semicircle to the opposite side.
13.How did bees tell
the exact distance of
the feeding place?
The number of
wagging
dances per
minute told the
exact distance
of the feeding
place.
14. Could bees tell
each other the
exact position of a
feeding place?
After doing
more experiments
to obtain data,
The zoologists
clarified the
procedure by
which bees
communicate
information that
they use to find
and fetch food.
Quiz
Please match each dance on the left column with
the proper feeding place on the right column.
A circle dance
Food is closer.
Food is farther away.
A wagging dance
A faster wagging dance
Food is near.
A slower wagging dance
Food is far away.
Retelling
Please listen to the tape and
fill in the blanks according
to the text.
The honey-bee has interested scientists most
because of their communicating “language”. A
scientist fromAustria , Professor Karl von
Frisch ,spent many years studying how honeybees communicated . Von Frisch set up two feeding
places, one is close to the hive, the other was
much far away. He observed that the bees that
had been a
Retelling
at the nearby feeding place were doing the
circling dance while the ones that had been
at the faraway feeding place were doing
wagging dance. In addition, he took both of
the two dances apart: the circle dance told
the bees about the location of the feeding
place while the wagging dance about the distance
of the feeding place was. The number of
wagging dances per minute told the exact
Retelling
distance to the feeding place. After
designing experiments, Karl von Frisch
with his partnersclarified the procedures by
which bees communicate information that
they use to find and fetch food. Because of
his devoting all his life to studying the
communication of animals, he was
awarded a Noble Prize in 1973.
Homework
1. Retell the text.
2. Do Ex.3 of post-reading to
find out more information
about the language of bees.
Thank you very