SectionB3a—3bSelfcheck (4).ppt

Unit 6 When was it invented?3a-self check It was invented in 1885.It is used for driving.carIt was invented by Carl Benz.It was invented in 1927.It is used for watching programs.TVIt was invented by John Baird.It was invented in 1876.It was invented by Bell.It is used for calling someone.telephoneIt was invented in 1971.It is made of plastic.It is used for studying or playing puterA:when was invented?B:It was invented inA:who was it invented by?B:It was invented by A:what is it used for?B:It is used for 1927John Bairdwatching programs1885Carl Benzdriving1971studying or playing games1876Bellcalling someoneHow did they think of that?crayon holdersearmuffswristiespopsicles1.When were popsicles invented?They were invented in 1905.2.Who were they invented by?They were invented by Frank Epperson.3.How were they invented?Frank left his juice outside and it became _.He couldnt drink it any more,but he could _ it.It tasted _.iceeatgoodEarmuffs1.When were earmuffs invented?They were invented in 1873.2.Who were they invented by?They were invented by Chester Greenwood.3.What are they used for?They are used for keeping ears warm.Crayon holders1.Who were they invented by?They were invented by Cassidy Goldstein.2.How were they invented?Cassidys crayons were _ and _.It was difficult to use them.She invented crayon holders.smallbrokenWristies1.Who were they invented by?They were invented by Kathryn Gregory.2.What are they used for?They are used for keeping wrists warm and dry.All these inventions have one thing in common-the kids were trying to solve problems in their lives.If they can do it,you can do it,too!Think of something that you do not like to do.Then think of an invention that could help you.Describe the invention to the class and you can also draw a picture of it.Name(It is called)Inventor(It was invented by)Year(It was invented in)look(color:It is)(material:It is made of/from)use(how it was invented)(It is used for)HomeworkFinish exercise 1,2 on page 48 on your textbook.Choose one great invention that you are interested in,surf the Internet for some information about it and write an article.