● Teaching objectives nbsp; nbsp; Knowledge target nbsp; 1. Accumulate words, master the pronunciation of words such as "remains, folds, disasters and traces", understand the meaning of words such as "disasters, compactness, traces and flawless", and learn to use them. nbsp; 2. Understand scientific concepts such as plate tectonics, mass extinction, collision theory, volcano theory and Shi Ying. nbsp; 3. Understand the thinking mode of the authors of the two articles. nbsp; Ability goal nbsp; 1. Compare and analyze the explanatory objects and angles of the two articles, grasp the scientific knowledge introduced in the two articles, and understand the openness and thoroughness of the author's thinking. nbsp; 2. Try to figure out the language, and realize that the language in this article is concise, logical and humorous. nbsp; 3. Cultivate students' thinking methods of looking at and thinking about problems from the perspective of connection. nbsp; Moral education goal nbsp; The study author uses rich scientific knowledge and keen scientific vision to explore the unknown spirit, and inspires students to study hard, not limited to success, dare to innovate, be good at innovation, and March into the unknown field of science. nbsp; ● Teaching emphases nbsp; 1. Grasp the contents of the two short articles, clearly explain the object, and clarify the writing ideas. nbsp; 2. Learn from the author's multi-angle and multi-faceted way of thinking that he is good at connecting with others. nbsp; ● Teaching difficulties nbsp; nbsp; Understand the function and meaning of supplementary explanations in the text. nbsp; ● Teaching methodnbsp; 1. Comparative reading method. nbsp; 2. Swimming taste method. nbsp; 3. Extension and expansion method. nbsp; ● Preparation of teaching AIDS nbsp; Multimedia nbsp; ● Class arrangement nbsp; 1 class hours nbsp; ● Teaching processnbsp; nbsp; [teaching points] 〕nbsp; nbsp; nbsp; nbsp; Read the text aloud and perceive the meaning of the text as a whole; Read the text intensively, compare and analyze the explanatory objects and angles of the two short articles, and deeply understand the content of the article; Try to figure out the language and understand the author's unique language style; Learn the author's way of thinking, guide students to pay attention to life, think about nature and society, look at problems from multiple angles, and gain new knowledge and true knowledge. nbsp; [Teaching Steps nbsp; 〕nbsp; First, the introduction nbsp; Design nbsp; Design (1) nbsp; nbsp; nbsp; nbsp; About 23 million years ago-65 million years ago, a strange reptile appeared on the earth. They have many similarities with modern lizards, such as their bodies covered with scaly skin. Their offspring are hatched from eggs and so on. In this long 165 million years, they have become the masters of the whole earth. They experienced the Triassic period with warmer climate, the Jurassic period with abundant food and the Cretaceous period with fear of survival. As creatures of the past, people gave them a name-dinosaurs. nbsp; nbsp; nbsp; nbsp; 65 million years ago, on a Cretaceous morning, herbivorous dinosaurs were eating a delicious breakfast, and there nbsp a loud bang. An earth-shaking big explosion happened, and from then on, dinosaurs gradually decreased until they finally became extinct. What caused the extinction of dinosaurs? Let's walk into the world of popular science written by Asimov with questions and seek answers. nbsp; Design (2) nbsp; nbsp; nbsp; nbsp; 65 million years ago, the dinosaurs that lived on the earth for 16 million years suddenly became extinct, which became the biggest mystery in the history of biology. What does the discovery of dinosaur fossils in different regions mean? What caused the extinction of dinosaurs? Asimov's two short essays respectively answered this question. Today we learn Dinosaurs Everywhere and Crushed Sand together. nbsp; Second, read the text aloud and perceive the meaning nbsp a whole. 1. Students read the text aloud. nbsp; Teachers check the preview, multimedia display: nbsp; (1) sound discrimination: nbsp; Will nbsp; Fold nbsp; Disaster nbsp; Retrospectively nbsp; (2) Interpretation: nbsp; Will nbsp; Fold nbsp; Disaster nbsp; Dense nbsp; Retrospectively nbsp; Seamless nbsp; Choose four students to answer, nbsp; Clear: (1) há innbsp; zhěnbsp; nànnbsp; sùnbsp; (2) Human remains: remains (residual bones left behind). nbsp; Fold: Bending caused by the compression of rock strata due to crustal movement. nbsp; Catastrophe: disaster, disaster. nbsp; Dense: meticulous and precise. nbsp; Tracing back: going upstream to the source of the river, metaphorically exploring the origin of things. nbsp; Seamless: Metaphorically speaking, there is no flaw in things. nbsp; 2. According to the text annotation, these two short essays are arranged together in the original book, and they are both in the chapter of "New Territories of Earth Science". What is the connection between these two short essays in content? nbsp; nbsp; nbsp; nbsp; Students talk about their initial impressions of reading. nbsp; nbsp; nbsp; nbsp; Clear: both short articles talk about the extinction of dinosaurs, and both prove that "different scientific fields are closely linked." New discoveries in one scientific field will certainly have an impact on other fields. " This view, both articles use scientific findings to support each other for scientific research. nbsp; Third, read the text intensively, compare and analyze the explanatory objects and angles of the two short articles, and deeply understand the content of the article. Multimedia display: nbsp; The teacher asked the students to read the text carefully and fill in the above table. nbsp; nbsp; nbsp; nbsp; Students read the text by themselves, then discuss and communicate in groups, asking everyone to speak and participate. Teachers patrol each group, grasp the discussion, give necessary instruction at any time, and then select two groups that have successfully communicated to introduce the reading results. nbsp; Clear: 1. "Dinosaurs Everywhere" explains the theory that the earth's crust is moving slowly but irresistibly, or the theory of plate tectonics. The angle of explanation is: to prove the theory of "plate tectonics" through the discovery of dinosaur fossils in Antarctica. The idea of the article is briefly as follows: nbsp; nbsp; nbsp; nbsp; The full text is divided into four parts. The first part is the first paragraph, and these two sentences are the logical basis of the whole article. The second part is 2~7 paragraphs, introducing that dinosaurs are everywhere and the mainland is drifting. The second and third paragraphs introduce that dinosaur fossils have been found in Antarctica and other continents of the earth, "indicating that dinosaurs are indeed all over the world"; 4、5