Presentation on theme: "Unit 14 zoology drone 雄蜂 royal jelly 蜂王浆 worker 工蜂 queen 蜂王 beeswax 蜂腊 beekeeper 养蜂人 beehive 蜂箱 honey 蜂蜜 as busy as a bee honeycomb 蜂窝."— Presentation transcript:
Unit 14 zoology
drone 雄蜂 royal jelly 蜂王浆 worker 工蜂 queen 蜂王 beeswax 蜂腊 beekeeper 养蜂人 beehive 蜂箱 honey 蜂蜜 as busy as a bee honeycomb 蜂窝 flower sting 毒刺 insect 昆虫 nectar 花蜜 pollen 花粉 bee house 养蜂场 hum/ buzz 蜂音 What other words come to your mind when you see “bee” this word?
The language of honey-bees
Skimming 1.The scientist can study the language of honey bees only after the development of ____. A. the modern beehive B. experiments C. dishes of honey D. researches of the language 1.The scientist can study the language of honey bees only after the development of ____. A. the modern beehive B. experiments C. dishes of honey D. researches of the language
2. After the marked bee danced, the other bees ____. A.danced together B. became very excited C. Seemed not to notice it D. both A and B 2. After the marked bee danced, the other bees ____. A.danced together B. became very excited C. Seemed not to notice it D. both A and B
3. Different dances indicate （ 表明 ） different _____. A. food B. feeding places C. steps D. semicircles 3. Different dances indicate （ 表明 ） different _____. A. food B. feeding places C. steps D. semicircles
Para. 1 Para. 2 Para. 3 Para. 4 Para. 5 Para. 6 Para. 7 Para. 8 1.The circle dance 2. A brief introduction of the bee 3. Whether bees could tell each other the exact position. 4. The wagging dance. 5. Pro. Karl von Frisch built special hives to study bees. 6. The number of wagging dances indicates the exact distance to the feeding place. 7.“Bee-line” and “ to make a beeline for ” 8. Something about the professor Match the general idea of each paragraph.
Careful Reading Para.1 a brief introduction of the bee Q : Why is it the honey-bee that has interested scientists most? Because of the language they use to communicate with each other.
Para.2 Pro. Karl von Frisch built special hives to study bees. What was Professor von Frisch puzzled by? When he placed little dishes of honey on a table, bees soon came. As soon as one bee discovered the honey, many more came to it one after another in a short time.
Para.3-4 the circle dance and the wagging dance Can you describe how the circle dance performed? And how the wagging dance performed?
the circle dance First it made a circle to the right, then to the left. It repeated these circles over and over again. Then the surrounding bees trooped behind the first dancer, copying its movements.
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. It kept the “steps” over and over.
Para.5 The number of wagging dances indicates the exact distance to the feeding place. 1. What did the scientists discover? 2. What a maximum distance do the bees fly? They discovered that the farther away the feeding station was, the slower the dance was. Bees fly a maximum distance of 3.2 kilometres between their hive and a feeding place.
What was the remaining question for Professor von Frisch and his partners? Para.6 The remaining question was to find out whether bees could tell each other the exact position of a feeding place.
To make a beeline for someone or something means: Para.7. To go quickly along a straight course for somebody or something.
Para.8 Karl von Frisch Austrian zoologist Karl von Frisch won the 1973 Nobel Prize in physiology( 生理学 ) or medicine. He discovered a number of pioneering breakthroughs in animal behavior.
Read the text, then fill the form blow: Problem s Experime nts Results Conclusio n How did one bee commu- nicate the news of food to others ? Professor von Frisch marked some bees with little dots of colour. The marked bee performed a circle dance, and the surrounding bees copied it and left for the feeding place together. The circle dance communi- cated the news of food.
Problem s ExperimentsResults Conclusio n Did the dance convey more informa- tion? Professor von Frisch set up two feeding places, one close to the hive, the other much farther away, and marked the bees with two colors. Bees from nearby feeding place did circling dance, while bees from the distant one did a wagging dance. The two dances told the bees about the location of the feeding place.
Problem s ExperimentsResultsConclusion How did bees tell the exact distance of the feeding place? Zoologists moved the feeding place slowly farther, and use a stop-watch to count how many times the bees repeated the dance per minute. The farther away the feeding station was, the slower the dance was. The number of wagging dances per minute told the exact distance of the feeding place.
Problem s ExperimentsResultsConclusion Could bees tell each other the exact position of a feeding place? Scientists obtained more data and did more experiments. The zoologists clarified the procedure by which bees communicate information that use to find and fetch food.
A circle dance A wagging dance A faster wagging dance A slower wagging dance Food is near. Food is far away. Food is closer. Food is farther away. Note making
根据课文内容填空 : There are many _________ of bee. Among the different types of bee, it is the honey-bee that has most interested scientists because of the “language” they use to _______________ with each other. The scientists Von Frisch built special hives to find out how one bee communicate the news of food to the other bees in the hive. varieties communicate
To his _____________, the bee who found the feeding place began to _________ a dance on the ________ of the honeycomb. The dance seemed to _______ the surrounding bees. They _________ behind the first dancer, _________ its movements. Then the bees left the hive and went to the _______ place. He found that the bees did the circling dance when the food is near, and that the bees did the ___________ dance when the food was far away. surprise perform surface excite trooped copying feeding wagging
He also found that the number of wagging dances per _________ told how far away the food was. minute
Some language points: 1. In order to tell the bees apart, he painted some bees with little dots of color.(para2) tell apart: 识别, 辨别 The twins are so much alike that we can hardly tell them apart.
2. So another astonishing fact came to light.(para5) come to light: 被人知道 ( 发现 ) New facts about ancient Egypt have recently come to light.
3. make a beeline for : 走近路, 走直路 As he spoke, he made a beeline for the door. （ 径直走向门口 ） If you want to catch up with the team, you’d better make a beeline for them. （抄近路）
1. Retell the text. Homework 2. Read exercise 3 of post reading to find out more information about the language of bees