lightupscience(科学)4b课件unit4makingashel.pptx

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1、UNIT 4 MMAKING A AKING A S SHELTERHELTER制作遮蔽处制作遮蔽处To keep us safe,To keep us warm,We need a shelter.To keep out the sun,To keep out the wind,We need a shelter.Part 1 Make It cover (覆覆盖物盖物)frame (支架支架)keep out (阻止阻止进入进入)shelter (遮蔽处遮蔽处)I am cold.It is going to rain.Lets make a shelter.What makes a go

2、od shelter?Tick().Design a shelter.Design a shelter.It is warm.It is waterproof.It is colourful.It is strong.What parts does a shelter have?Draw a picture.A shelter often has a frame and a cover.Select materials.Select materials.The frame should be strong.It gives the shelter a shape.Which materials

3、 make a good frame?Tick().plasticwoodcardboardThe cover should keep out the rain and the wind.Which materials make a good cover?Tick().Which objects can you use to join the frame and the cover together?Circle them.sticky tapestringdrinking strawsMake a shelter.Make a shelter.Make a frame.These are s

4、ome ideas.Add a cover.Join them together.Now your shelter is complete!Draw a picture of your shelter.Part 2 Test ItNow test your shelter.The rain testThe wind testIf your shelter keeps out the rain and wind,it will keep you warm.Can your shelter do these things?Colour the stars.Can it keep out rain?

5、Can it keep out wind?Can it keep Mary and Bob warm?What did you like about making your shelter?What was difficult?Part 3 Think AgainHow can you make your shelter better?Draw a picture.WorkbookWorkbookWrite the letters.C1234I can use these sticks to make a _.We need to make a _.BCYay!I can use these

6、leaves to make a _.APossible answer:Yes,it will be warm inside the shelter.There are little air bubbles in snow.The bubbles make snow an insulator.A Shelter Made of SnowSome shelters are made of wood.Some shelters are made of grass or leaves.This boy is making a shelter of snow.Will it be warm in the shelter?Is snow an insulator?