- That the Earth, Sun and Moon are approximatelyspherical.
- It is difficult to collect evidence to testscientific ideas so sometimes you have to use indirectevidence.
- write aletter to Colin explaining that the earth, sun and moon arespherical
- usepictures to demonstrate
- Give 3ways of proving that they are round
- usescientific vocabulary
Read thestory Six Suns (or Howthe Cockerel got its Comb) - traditionalChinese tale. Explain that many years ago, people did not know howmany suns there were. Why would they think that there might besix?
Tell the ch thatmany years ago people thought the earth was flat. Ask them whythey think they thought this and then establish that the earthlooks flat to us and it feels flat (we used our senses). If wedidnt know we would be like the millions of people many yearsago. Then ask is this good scientific evidence (ch may say nobecause they know the earth is not flat), but establish that we aretold to use our senses to work things out.
Put a pencil in aclear pot of water and ask the ch what they can observe. They willsay that the pencil is bent. Key question: is it reallybent? Now ask the ch to use their senses to feel the pencil.Conclude that we used our senses to help us the same way thosepeople did many years ago.
Keyquestion: So how didscientists find out that the earth was spherical?
Collect ch ideasand then show ch a photograph of the Earth, taken from space. Andestablish that this is the strongest piece of evidence. Discusshow pics are taken satellites etc refer to Isras reading groupwho have already read about this in guided reading).
Even withoutpictures many people thought the Earth was round... how did theyknow without directly seeing the Earth? In TPs discuss this.Children feed back to class.
Tell children 4ways you can tell that the earth is spherical. (See fact file p4New Star). Ships sailingaround the world, ships appearing and then getting lower and lowerand finally sinking out of sight - disappearing over the horizon,photos from space, travelers who set off in one direction (east orwest) and keep going, arrive back where they started.
Draw a 1950s child(Colin)with the speech bubble, Did you know that the Earth isflat?
Task: Class writea letter and draw to the children explaining that the Earth is asphere and what evidence there is to explain this.
LAs givensentence starters to stick into their books. (Farhan, aneeqa, isra,tahidur, jak)
Mohammed to makethe S, E, M using plasticine and then to roleplay a lesson where heis the teacher and the TA is a caveman child. Mohammed to explainto TA that the earth, sun and moon are spherical.
ROly Poly birdstable
Mohammed to sharehis lesson if confident enough. Then choose volunteers to readtheir letter to the class.
New starfact file or p.129 from LCP
Picturesof earth, sun and moon from space (google images)