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1、Water boy ---we will rock you,Three forms of water,-----馬平艷,What do I also need?,+,+,=,?,,,How to get ice?,,,,ice,(freeze),water,/fri:z/,,ice,water,,(melt),,water,steam,,( boil ),,,steam,,water,(cool down),,ice,steam,wat
2、er,,,(freezes),(melts),(boils),(cools down),,,How do they turn into each other?,They are three forms of water.,/fR:m/,,ice,freeze: water,---When water_______, it turns into _______.,---What happens when water ________
3、__?,freezes,freezes,ice,---When _________, it turns into _______.,---What happens when __________?,,melt: ice,water,ice melts,water,ice melts,boil: water,steam,,turns into steam,---When water_____, it _______________
4、__.,---What happens when water ______?,boils,boils,---When ________________, it _______________.,---What ___________________________?,cool down: steam,,water,happens when steam cools down,steam cools down,turns into wate
5、r,Let’s have a competition!,,,,,,,,,,,Use “when water… …, it turns into … ….”,,,,,,S1:What happens when water……… ?S2:When … …. , it … ….,Do pair work:,I’ve got some questions for you to think about. What happens when wa
6、ter boils? What happens when water freezes? What happens when ice melts? What happens when steam cools down?,Look an read,When water boils, it turns into steam.,When water freezes, it turns into ice.,When ice melts, it t
7、urns into water.,When steam cools down, it turns into water.,Listen and answer,Do more practice,Step1:Put a dry lid on a glass of hot water. Step2:Wait for ten seconds. Step3:Take the lid off.,Do an experiment (A),Do
8、an experiment (B),stept1:Put some ice cubes in a glass of water. Stept2:Wait for two minutes. Stept3:Look at the outside of the glass.,Experiment (A),Drops of water,turns into steam,drops of
9、 water,forms,May,Experiment (B),forms,May,Drops of water,steam,cools down,turns into,drops,of water,air,Do you know how the water comes to our houses?,I am a drop of water,Show your poems,I am a drop of water,When
10、 the sun starts shining, I fly to the sky. I turn into steam. I am a drop of water,……………………………………. I am a drop of water,……………………………………,show time!,,Write your poem on your notebook.2. Finish workbook page 64.,
11、Assignment,I am a drop of water,When the sun starts shining, I fly to the sky. I turn into steam. I am a drop of water,……………………………………. I am a drop of water,……………………………………,Water is important,Water is importantDrink
12、 lots of water.Wash your face with water.Brush your teeth with water.But, never, ever waste water.Water is for drinking.Water is for washing clothes.Water is for bathing.Water is not for wasting!Don’t waste a sin
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