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1、Water boy -we will rock you Three forms of water-马平艳What do I also need?+=?How to get ice?ice(freeze)water icewater(melt)watersteam( boil )steamwater(cool down)icesteamwater(freezes)(melts)(boils)(cools down)How do they turn into each other?They are three forms of water.icefreeze: water -When water_
2、, it turns into _.-What happens when water _? freezesfreezesice-When _, it turns into _.-What happens when _?melt: icewaterice meltswaterice meltsboil: water steamturns into steam-When water_, it _.-What happens when water _? boilsboils-When _, it _.-What _? cool down: steamwaterhappens when steam c
3、ools downsteam cools downturns into waterLets have a competition!Use “when water , it turns into .”S1:What happens when water ? S2:When . , it .Do pair work:Look an readWhen water boils, it turns into steam. When water freezes, it turns into ice.When ice melts, it turns into water.When steam cools d
4、own, it turns into water.Listen and answerDo more practiceStep1: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 an experiment (B) (B) stept1:Put some ice cubes in a glass of water. Stept2:Wait for two minutes. Stept3:Look at the outsi
5、de of the glass.The title of the experiment：Three _ of waterThe date:_ 24th , 2012The aimto find out what is under the lid and how does it happenThe theory:when water is hotter, it turns into steam. WhenSteam cools down, it turns into water.Materials :1 a glass of hot water2 a dry lidSteps :First, g
6、et a glass of hot water and a dry lid. Next, put the lid on the glass. Then wait for ten seconds. Finally, take the lid off, and find out what is under the lid.Result:_ _ _ are under the lid. Its because the hot water in the glass _ _ _. The steam turns into _ _ _ under the lid.Experiment (A)Drops o
7、f water turns into steam drops of waterformsMay The title of the experiment：Three _ of waterThe date:_ 24th , 2012The aimto find out what is on the glass and how does it happenThe theory:There is steam in the air. when steam cools down, it turns into water.Materials :1 a glass of water. 2 some ice c
8、ubes.Steps :First, get some ice cubes and a glass of water. Next, put some ice cubes in a glass of water. Then wait for two minutes. Finally, look at the outside of the glass and find out what is on the glass.Result:_ _ _ are on the glass. Its because there is _ in the air. When steam _ _, it turns
9、into water. When the steam in the_ meet the cold glass, it immediately _ _ water. So we can see some _ _ _ on the outside of the glass.Experiment (B)forms May Drops of watersteam cools downturns intodrops of waterairDo you know how the water comes to our houses?I am a drop of waterShow your poemsI a
10、m 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, 1. Write your poem on your notebook.2. Finish workbook page 64.AssignmentI am a drop of water, When the sun starts shining, I fly to the sky.I turn into steam.I am a drop
11、of water, .I am a drop of water, Water is importantWater is important Drink 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! Dont waste a single drop!
