1211三年级【英语(人教版)】专题课二 第一课时-2PPT课件.pptx

国家中小学课程资源专题课二（第一课时）年级：三年级学科：英语（人教版）主讲人：张梦瑜学校：首都师范大学附属玉泉学校

学习目标Lesson1Let’sknowaboutwater.1.能够了解自然界中水的三种存在状态及特点。2.知道温度是使水的状态发生变化的原因。

Let’ssing.01

dosports

potatoestomatoescarrotsfruiteggsmeatWeshouldeat...Weshoulddrink…milkwater

Waterisimportanttoourbodies.

Waterisimportantinourlife.

rainsnowice

Let’slearn.02

?IceIceishardandcold.Iceisasolid(固体).Asolidhasitsownshape(形状).

?Whathappenswhenyouputiceinthesun?Theheat(热量)canchangeicetowater.

?WaterWaterisaliquid(液体).Aliquidisrunny(易流动的).Itcanflow(流动).

?Whathappenswhenyouheatwater?Theheat(热量)canchangewatertosteam.

?SteamSteamisagas(气体).It’shardtosee.Agasgoesintotheair.

?iceheatwaterheatsteamwaterHeatcanmakethingschange.

Ice

IceIceisasolid.

Iceishard.Icestone（石头）ironblock（铁块）

IceIceiscold.

Water

WaterWaterisaliquid.

WaterWaterhasnocolour,smellortaste.

WaterWaterisrunny.Itcanflow.

Water

SteamSteamisagas.

SteamAgasgoesintotheair.It’shardtosee.

icewatersteamheatIce,ice,iceisasolid.Water,water,waterisaliquid.Steam,steam,steamisagas.Heatcanmakethingschange.

?IceIceishardandcold.Iceisasolid(固体).Asolidhasitsownshape(形状).

?Whathappenswhenyouputiceinthesun?Theheat(热量)canchangeicetowater.

?WaterWaterisaliquid(液体).Aliquidisrunny(易流动的).Itcanflow(流动).

?Whathappenswhenyouheatwater?Theheat(热量)canchangewatertosteam.

?SteamSteamisagas(气体).It’shardtosee.Agasgoesintotheair.

?iceheatwaterheatsteamwaterHeatcanmakethingschange.

watericesteam

Let’spractise.03

Let’smakeaspinwheel!agluestickscissorsapinaneraser

SummaryicewatersteamheatIceisasolid.Waterisaliquid.Steamisagas.Heatcanmakethingschange.

我知道温度是使水的状态发生变化的原因。我了解自然界中水的三种存在状态及特点。Self-assessment（自我评价）

1.读一读，唱一唱。2.做一做，说一说。课后练习

谢谢！本视频课程中的部分图片、视频引自有关图书、网络，特向这些图片、视频的制作者和有关图书的出版者和相关网络表示感谢；因多种原因，事先未与作者和出版社取得联系，特向他们表示歉意。