17 June 2008

Splat!

The day didn't start too well.  The plastiscine was too hard.  And my bright idea of letting it warm gently in the microwave for a mere few seconds turned it into a solid lump!  But fortunately we were able to find a most generous class teacher who had some to spare.

There then followed a therapeutic few minutes of rolling and stretching and squeezing as we found out what our task was to be.

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Our question was, 'What happens to the size of the splat (that's what you get when you drop a ball of plastiscine onto the floor) when you change the height from which you drop it?'

This is what we would do:

  • roll the plastiscine into a ball

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  • drop it onto the floor (from three different heights - at arm's length, from a chair.....

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and from the desk)

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  • carefully paint just the flattened part

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  • squish that onto a piece of paper to print a mark in the shape of the flattened part

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In between each drop, make sure you clean the plastiscine - and try not to get too blue! (I think that's Giulia's hand in the photo)

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  • compare the three 'splat' sizes

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Now, what true statement can you make about what you found out?  Maybe using the words

higher

lower

bigger

smaller

will help.

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