ãÑÈÚ äÕ: Date: Class: 2nd grade Unit: 6 Lesson 4 Daily Plan N Lesson Objectives Activities Aids Evaluation Time 1 2 3 1st.Preview the reading. 2nd.Practise silent reading. 3rd.Introduce new voc and check comprehension of the reading Open PB/P87. S read aloud the title , ask: What is the problem with the ozone layer? .. a hole in the ozone......or.......There is a decrease in ozone in the earth’s atmosphere. • Ask: What is the cause of this hole? What is the cause of this decrease? fringes, air-conditioners, plastic foam and aerosol sprays. • How many paragraphs are there in the passage on page 87? 5 • S read aloud the 1st sentence of para #1, ask: What do you thing this para about? the earth’s atmosphere, or the layers in the earth’s atmosphere. • Do the previous step with the other 5 para, e.g.,.: Þ para 2: a decrease in ozone in the stratosphere. Þ para 3: dangers of this decrease. Þ para 4: one cause of this decrease. Þ para 5: the answer to the problem of this decrease. • Write these 3 Q’s on the board: 1. Why is the ozone layer important? L:7-12, Because it protect the earth’s surface from ultraviolet rays. 2. What are CFCs used for? L:43-47, For cooling in fringes and air-conditioners, for making plastic foam, and in aerosol sprays. 3. Has anyone tried to solve the problem? L:45-56, Yes. A group of countries agreed to produce fewer CFCs. • S read aloud the Q’s, S open PB/88, (4m) to find the answers and the lines. • I’ll read the passage but S ‘ll complete reading the sentences, S underline words they don’t know. I’ll introduce these words, the others ‘ll be in the Word Study: • I’ll show them the words, S read them in the passage, try to find their meanings by using similarity One)deadly: (adj.) like dead and die means they can kill people. Two)populated: similar to people and population.... are areas where there are people. Three)increase (v):( X decrease) = more Four)chlorofluorocarbbons: a group of man-made chemicals. (CI) chlorine (F) fluorine (C) carbon + hydrogen e) CFCs / see-eff-sees/: as the same as the previous word (an appreviation), the last” s “is for the plural. f) agreement: like agree, (n) from agree, -ment means that this word is (n). • Ask: Where can we find the ozone layer? L:4-6, in the atmosphere What is happening to the ozone layer above populated regions of the earth? L:26-28. it become lees. What are the ultraviolet rays thought to case? L:32-33, eye disease What is the answer to the problem of the decreasing ozone layer? L:51-53, to produce fewer CFCs Some cards. Nothing. A. (15m) B. (10m) C. (20m)