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1、 Unit 4UNIT4Lessons 25 3 2Look into Science!Functions:Grammar:Structures: Certainty and Uncertainty SequenceThe Simple Future Tense fill/coverwith right side up take away turnupside down use upLesson 25: Lets Do an Experiment!1) get 的用法及短语: get warm, get alongonwell with get away from, get back, get
2、 in, get off get up, get together, get through, get to2) sb, be sure + that 从句。“认为一定”3) observe sb. do sth. observe doing sth. Learning aims:1) The new words: scienceexperiment fill prove theory jar upside observe right side up upside down 2) The important sentences: I fill a jar with water. I turn
3、the jar upside down. I think the floor will get wet. Im sure the floor wont get wet. We can prove whos right. Well do the experiment and observe what will happen. Learning important and difficult points:New words:scienceexperimenttheoryfilljarupsideproveobserveOne Experiment, Two TheoriesA “theory”
4、is an idea. A theory predicts what will happen. An experiment shows what happens.Brian: Did you read about this experiment, Danny? I fill a jar with water. I cover the top with a piece of cardboard. Then, I turn the jar upside down.Jenny: Guess what will happen!Danny: Im not sure. I think the floor
5、will get wet. Maybe you should do this experiment outside, Brian!Brian: No, we can do it inside. Im sure the floor wont get wet.Danny: Why not? The cardboard cant keep the water in the jar!Jenny: Lets do the experiment and see what happens. Brian has one theory, and Danny has another. We can prove w
6、hos right.Brian: Great! Well do the experiment and observe what will happen.Lesson 26: One Wet Danny?宾语从句. Learning aims:1) The new words: force, swimsuit, observation,2) The important sentences: I will ask the class to make observations and guess what will happen. Well ask the students what the exp
7、eriment proves. Learning important and difficult points:Brian, Jenny and Danny are talking about their experiment.Brian: jenny, you can talk to the class. Then Danny and I will do the experiment.Jenny: Okay, I can tell the students what were going to do. Then you and Danny can put the water into the
8、 jar.Danny; I will tell them my theory. I think we will get wet!Brian: Then I will tell them my theory. The force of the air will keep the water in the jar.Danny: (He laughs.) Your hand can keep the water in. But air cant!After the experiment, we will talk about our observations. Well ask the studen
9、ts what the experiment proves.Brian: We will observe what happens, Danny. That will prove who is right.Jenny: I have a good idea. Danny can sit in a chair. Brian will hold the jar above Dannys head. Brian will turn the jar over. I will ask the class to make observations and guess what will happen.Da
10、nny: I think I will bring my swimsuit to school that day.Jenny: Yes, wear your swimsuit. That youre going to get wet.Danny: I am going to get wet!I will need to dry myself off!Danny the “Dry-o-saur”!Lesson 27:New words:surprisedexaminediscoverconclusionexplainenoughweirdmudliquidsolidspooncornstarch
11、spoonfuladdmixpourdissolvepress形容词的比较级. Learning aims: 1) Master the new words: surprised, examine, discover, explain, enough, solid, spoon, add, mix, pour, conclusion, weird, mud, corn starch, spoonful, dissolve, press2) The important sentences: Brian will take his hand off the cardboard. The force
12、 is strong enough to hold the water. Air is strong than I thought. Put eight spoonfuls of cornstarch into the bowl. Learning important and difficult points:Danny, Jenny and Brian stand in front of the class. Everyone laughs. Danny is wearing his swimsuit!“Okay, everyone!” says Jenny. “We are going t
13、o show you an interesting experiment.”Danny sits down. Brian puts water into the jar. He puts the cardboard on top of the jar. He puts his hand on the cardboard and turns the jar upside down. Then he holds the jar above Dannys head.I guess so.Are you ready, Danny?Brian takes away his hand. Brian is
14、right!“Are you surprised, class?” asks Jenny. “Examine the jar and the cardboard. We have discovered that cardboard can hold the water in. What are your conclusions? Why didnt Danny get wet?”“Maybe you used glue!” says one student.“No, thats not it! The air pushes up on the cardboard,” explains Bria
15、n. “Its like water pushing up on a boat. The force is strong enough to hold the water.”“Air is stronger than I thought!” says Danny.Next, Brian will take his hand off the cardboard,” says Jenny.“Now you know why Im wearing my swimsuit,” says Danny.“Dannys theory is that he will now get wet,” says Je
16、nny. ”Is he right, class?”“Yes, I think so!” says one student.“No, I dont think so!” says Brian.In this experiment, you make something thats sometimes a liquid and sometimes a solid.What do you need?l a bowll a spoonl cornstarchl waterWhat do you do?1.Put eight spoonfuls of cornstarch into the bowl.
17、2.Add four to five spoonfuls of water.3.Mix the cornstarch and water together.4.Pour the mud into your hand.5.Open and close your hand.What is happening?Some things dissolve in water. Sugar dissolves in water. Salt dissolves in water. But not cornstarch. It only mixes with water. When you close your
18、 hand and press, some of the water gets out. The mud becomes solid. When you open your hand, the water mixes in again. Now it is a liquid!What else can you do?Put some of the mud in a bowl. Now hit the mud with your open hand. What happens? Now do the same thing with water. Are the mud and water the
19、 same when you hit them?Weird MudLesson 28:Fill My Plateuntil 的用法 . Learning aims:1) Remember the words: plate, taste, empty, full2) The important sentences: That tastes so great. I will eat until my plate is empty. Learning important and difficult points:Its time for lunch!Please fill my plate!With
20、 good hot food,That tastes so great.And I will eat until my plate is emptyAnd my stomachs full.Its time for lunch,I love good food!Its time for lunch!Please till my bowl!With good hot food,That tastes so great.And I will eat until my bowl is emptyAnd my stomachs full.Its time for lunch,I love good f
21、ood!When my plate is full, Im happy!When my plate is empty, Im happy!What? I dont understand, Danny. “Empty” is the opposite of “full”. So why arent you sad when your plate is empty?Because when my plate is empty, my stomach is full!Lesson 29: An Easter Egg Hunt1) fun have fun doing sth. Its fun to
22、do/doing sth.2) 辩析 find, look for, hunt. Learning aims: 1) The new words: basket, hide, hunt, everywhere, Easter, be gone2) The important sentences: Debbie will have fun looking for them. I cant make eggs. Can you find them? Now my basket is full of eggs. Learning important and difficult points:When
23、 you “hunt” for something, you find it! An Easter egg hunt is a game for finding eggs. It is Easter Sunday. Danny is at the park. He is making an Easter egg hunt for his cousin Debbie. Jenny and Brian are helping him. “You brought a lot of chocolate eggs, Danny,” says Jenny. “Debbie will have fun lo
24、oking for them.” “I brought an Easter basket,” says Brian. “Debbie can put Easter eggs in it.” “Lets hide the eggs,” says Jenny. “Debbie will be here soon. We dont want her to see them!”Im going to hide an egg in my mouth. Debbie wont see it there!Im sure nobody will see it! That egg will be gone! J
25、enny, Brian and Danny put eggs on the ground. They hide them behind rocks and under trees. Soon, Debbie arrives. “Happy Easter, Debbie!” says Danny. “Heres an Easter basket,” says Brian. “Now, fill it with eggs!” “I cant make eggs,” says Debbie. “Im not a chicken!” Jenny laughs. “We put chocolate eg
26、gs everywhere in the park. Can you find them?” Debbie runs and runs. She climbs trees. She fills her basket with eggs.Great, Debbie!Now my basket is full of eggs. Do you like chocolate?Lesson 30: Keep the Candle Burning!half 的用法adv. “部分地，一半地”，adj. “半个的，一半的” half a year. Learning aims: 1) Master the
27、new words: match, light, burn, use up, shallow, candleholder, oxygen, one-fifth2) The important sentences: Fill the dish half full of water. As the candle burns, it uses up oxygen in the air. There is about one-fifth oxygen in the air, so the water rises and fills about one-fifth of the jar. Learnin
28、g important and difficult points: Science is so interesting! Im sure youll like this experiment!What do you need?l a candlel a candleholderl a big glass jar l a shallow dish with waterl matchesWhat do you do?1.Put the candle in the candleholder.2.Put the candleholder in the dish.3.Fill the dish half
29、 full of water.4.Light the candle.To make a candle burn you “light” it. What do you use? A match.5. Let the candle burn for two or three minutes.6. Carefully put the jar over the candle until the top of the jar rests on the dish.7. Look at the water in the jar. What observation can you make?What is
30、happening?As the candle burns, it uses up oxygen in the air. The water inside the jar then rises. How far did the water rise? There is about one-fifth oxygen in the air, so the water rises and fills about one-fifth of the jar. Lesson 31: Surprise Your Friends!1) surprise sb. to do sth. be surprised
31、at sth to ones surprise surprised 与 surprising 区别2) 辩析： interested 与 interesting. Learning aims: 1) The important sentences: Do you want to surprise your friends? The cardboard will hold the water up! Science is interesting!. Learning important and difficult points:Hi, Li Ming!Do you want to surpris
32、e your friends? Brian, Jenny and I did an experiment in science class. You can do it, too!First, you need to get ready. Get a glass full of water and a piece of cardboard.Tell a friend to sit down. Cover the glass with the cardboard, and turn the glass over. Hold it over your friends head.Tell your
33、friend, “I am going to take my hand off the cardboard. Will the cardboard hold the water in the glass?”“No, I dont think so,” your friend will say. “ Keep your hand on the cardboard, please!”Next, take your hand off. The cardboard will hold the water up! Air is heavier than we think! It pushes down
34、on us from above. It also pushes up on us from below. In the experiment, air pushes up on the cardboard. But it cant push down on the water because the water is inside the glass. The air holds the water!Science is interesting. Dont you think so?Your friend, DannyDid you try this experiment?To: Li Mi
35、ng net. cnSubject: An Experiment!From: Date: 24/04 5:57 PMLesson 32: Unit Review. 词汇1. 掌握词汇：science, experiment, fill, prove, force, surprised, examine, discover, explain, enough, liquid, solid, spoon, add, mix, pour, plate, taste, empty, full, basket, hide, everywhere, match, light, burn, use up 2
36、. 认知词汇：theory, jar, upside, observe, swimsuit, observation, conclusion, weird, mud, cornstarch, spoonful, dissolve, press, Easter, hunt, shallow, candleholder, oxygen, one-fifth. 词组和句型look into, do an experiment, fill/cover with, upside down, right side up, the force of the air, get wet, turn over,
37、in front of, on top of, take off, be ready, take away, be surprised, strong enough, a spoonful of, dissolve in, keepdoing, halffull of, be gone, take off. 语法The Simple Future Tense 一般将来时shallI shall wear shorts tomorrow.Shall we have any classes tomorrow?willThere will be some showers this afternoon.Ill tell them my theory.Will you be free next week?Im sure I wont lose my way.be going toIs Danny going to hide an egg in his mouth?We are going to do a science experiment in class tomorrow.Im not going to get wet.Its going to rain.
