Unit 5 Into the wild Understanding ideas 课件-2024-2025学年外研版（2019）高中英语必修第一册

Other members of the monarch butterfly genius have royal names as well. Some of these include the queen and the soldier. For this reason, the group is also known as the royal butterflies. There is more than one monarch in the royal butterfly genius. The most commonly known monarch butterfly is the most widespread, but there is also the african monarch, the jamaican monarch and the southern monarch. The monarch butterflies specific name means striking in ancient greek. It's also the genius name for a group of jumping spiders who sport orange, black and White stripes too. Monarch butterflies are classified in the largest butterfly family. This family name means something along the lines of bearing the resembLance of NIPS. So we like to think of them as small ferries. Butterflies classified in the same family as monarch are also known as brush footed butterflies and four footed butterflies, bigger than name, brush footed for their Harry, four feet and four footed because they only have two pairs of walking legs. In theory, if a human being eight enough monarch butterflies, that person could experience cardiff arrest. Monarch butterflies eat from milkweed plants, which have toxins in them that can be used to help with heart failure in small doses, but cause heart attacks in hydas S. Although monarch butterflies almost exclusively eat milkweed plants, not all animals can partake in this food source. Domestic livestock such as horse, sheep and cattle all get poisoned by consuming this toxic food. Monarch butterflies eat milkweed. However, they can't break down the toxic compounds received from the plant. This is why the butterflies themselves to become toxic and bitter tasting the poison doesn't affect them. However, IT does remain in their body. The monarch butterflies, orange and black epithetic tic coloration to indicate to other animals how nasty they are is mimic by another butterfly. The smaller but similar looking vice roy looks just like monarch and also tastes bad. It's currently hypothesized that the White spots on a monarch wings help them fly. The individual monarch who fly their long fall migration have more White than those who don't fly this distance. It's believed that different colors could help with heat distribution and impact era dynamics. You've probably also heard that monarch butter flies don't all migrate, have sexual dimorphism. nullThe Monarch’s Journey 必修一 Unit5 Into the Wild 目录 1. ‌ Lead-in (2 minutes)‌ 2. ‌Check out (3 minutes)‌ 4. ‌Exploration and Inquiry(10 minutes)‌ 3. ‌Ｔeaching and explaination(10 minutes) 5. ‌Practice (Application) (10 minutes)‌ 6. ‌Review and summary (5 minutes) Three objectives 01 01 01 02 01 03 　　　Teaching Objectives‌: Understand the migration routes and distances of monarch butterflies. Master the navigation mechanisms of monarch butterflies. Recognize the survival challenges and measures for them Look at the pictures and choose the animals that migrate. 　　　１.‌Introduction and preparation (2 minutes) b c e f monarch butterfly Siberian crane Atlantic salmon red panda killer whale African lion 黑脉金斑蝶 西伯利亚鹤 大西洋鲑鱼 红熊猫 虎鲸 非洲狮 　　　１.‌Introduction and preparation (2 minutes) Watch the video and find out: 1.what you know about animal migration. 2.How far do you think monarch butterflies migrate? The monarch butterfly is a kind of beautiful insect with fine black and orange wings.It travels about 4000 kilometres. 　　　1. ‌Introduction and preparation (2 minutes) Which two countries are the main destinations for monarch butterflies’ migration? Canada (and the northern U.S.) to Mexico. What are the three main threats to monarch butterflies mentioned in the text? Habitat loss, climate change, and pesticide use. Based on the text, what is the first step scientists suggest to protect monarch butterflies? Planting milkweed (their host plant) in gardens or community areas. 　　　 2. ‌Preview and Check (3 minutes) 　　　 2. ‌Preview and Check (3 minutes) Time: ___________________ When and where do they migrate? Place: Travel around 4000 km (_______) to California or Mexico Routine （惯例） Migration of the monarch Every autumn/fall south 　　　3.Lecture(while-reading) (10 minutes)‌ What is the main idea of the passage? A. The monarch's migration. B. The reasons for monarch's migration. C. Mexico's monarch. The main idea of a passage can be found from its title, the topic sentences, or even the pictures. 　　　3.Lecture(while-reading) (10 minutes)‌ Read for the main idea of each paragraph and the passage structure. Para. 1 Para. 2 Para. 4 Para. 5 a. How do people solve the trouble ? b. What is migration? c. What is monarch’s serious trouble? d. When & where did the monarch migrate? e. How does the monarch migrate ? Para.3 　　　3.Lecture(while-reading) (10 minutes)‌ Find out what mystery the scientists have solved. The scientists have solved the mystery of how monarch butterflies manage to travel a long distance and find their way to their destination. How can the monarch migrate successfully? 　　　3.Lecture(while-reading) (10 minutes)‌ The monarch butterfly is able to tell _________________. Using these two pieces of information, the monarch butterfly determines _______________. The monarch butterfly measures _______________________ with its eyes. The monarch butterfly reaches _______________________________________ the time of day the way to go the places where it will spend the winter. the position of the sun cause（原因） cause - effect flow chart(因果流程图） effect（结果） Tell the time of day Measure the position of the sun Determine the way to go Reach the places where it will spend the winter 　　　4. ‌Exploration and research(10 minutes) Group Discussion in groups and then present your results What can people do to help protect the monarch butterfly? Measures Record its migration Ensure enough food Secure the natural environment Plant native trees to feed on them Engage more researches Create suitable habitats(栖息地） Teach the farmer to use chemicals correctly 　　　4. ‌Exploration and research(10 minutes) Why do scientists do the reserch? Is it meaningful? Significance(意义） The more_____________________________________ The greater____________________________________ we know about this lovely creature, the chance it will survive and keep its place in the natural world for a long time to come. 我们对这种美丽生物了解越多，它存活的机会就越大，它们在自然界中得以长久生存并保持其位置的可能性就越大。 　　　4. ‌Exploration and research(10 minutes) Why does the author use “journey” instead of “migration” in the title? 1.The monarch's journey to the destination 2.Scientists’ journey to discovering the mystery 3.Human’s journey to protecting the environment It is a long and difficult process(过程） in need of joint efforts We should make our joint efforts in the journey to protect the ecosystem. 　　　 5. ‌Practice (Application) (10 minutes) The 1._________ (migrate) of the North American monarch butterfly can be considered as the most 2. __________ (wonder) one in nature. In other words, it’s 3. ___ wonder! Every autumn, these beautiful insects 4. have black and orange wings manage to travel to California or Mexico. At first, no one knows how they migrate. 5.________, a team found the answer eventually. The reasons why the monarch can reach the destination 6._________ (correct) are that not only are they able to tell the time of the day, but also they have the ability 7.___________ (determine) the position of the sun. The current situation is that the number of the monarch is falling, which leads 8.___ the awareness of this creature. Human 9. (behave) have an effect on them, but people are taking 10.__________ (measure) to save them. migration wonderful a that/which However correctly to determine to behaviors measures Short Answer‌: Explain what a sun compass is and how it aids monarch navigation. Why is conserving monarch butterflies important 　　　　5. ‌Practice (Application) (10 minutes) A sun compass uses the sun’s position and time of day to determine direction. Monarchs adjust their flight path based on the sun’s movement. Monarchs are vital pollinators and indicators of ecosystem health; their decline signals broader environmental issues. 　　　 5. ‌Practice (Application) (10 minutes) What can people do to help protect the monarch butterfly? 　　　6. ‌Review and summary(5minutes) when/ where/ why how trouble solution 1.tell the time of the day; 2.determine the way to go; 3.measure the position of the sun The population has crashed by 90% 1.avoid cutting down trees and plants; 2.reduce the usage of chemicals; 3.limit human activity autumn; the south of America to seek for food、partners、warmer weather The Monarch's Journey 　　　 6. ‌Review and summary(5minutes) The monarch’s migration Scientists’ finding about the monarch Human’s protection about the monarch This passage is about the Journey related to _______________ Trouble of the monarch & the reasons The definition(定义) & reasons of migration Monarch butterfly Summary ①Write an essay or report on monarch 　 migration and conservation. ②Observe and document monarch butterflies or other wildlife in your community, then propose conservation strategies. 　　　6. ‌Review and summary(5minutes) Homework Thank you Lavf58.20.100 $$