SCIENCE,
                                  DISCOVERY,
                                      &
                                   LAUGHTER
                      A FUN AND PRACTICAL GUIDE FOR DOING
                             SCIENCE WITH CHILDREN

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ATTENTION: SURFACE TENSION

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    PENNY PLOP
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                @
                @  How many drops of water will fit on a penny?  Find out!
                @
                @  WHAT TO DO:
                @  Make a prediction about how many drops of water will fit
WHAT YOU NEED:  @  on your penny before it overflows.  Use the eyedropper
 A penny        @  or gumdropper to carefully put drops of water on the
 Water          @  penny.  Count the drops.  Turn the coin over and try
 Eyedropper or  @  again.  Does heads or tails make a difference?  Com-
 our gumdropper @  pare the results with your original guess.  Are you
                @  suprised?
                @
                @  WHAT TO DISCOVER:
                @  Explore the surface tension in other liquids.  Try oil,
                @  milk, soapy water.  Try different coins- nickels, dimes,
                @  quarters.  Base your prediction on what you've learned
                @  from the penny experiment.



                                  FUN TO FIND OUT...
                                  How is soap made?
MAKE A                            Why do soap and
GUMDROPPER                        water make things
  It's easy!                      clean?                AHA!
  You will need        READ                             The water
  a small gumdrop      The Magic Schoolbus              molecules at
  and a plastic        at the Waterworks                the surface of
  straw.  Press the    by Joanne Cole                   the water form a 
  gumdrop into the                                      tension because
  end of the straw.                                     they are so
  It works like            CHALLENGE                    attracted to one
  an eyedropper!           Water is amazing!            another and to the
  Just put the straw       Tie a string to a faucet.    water molecules
  in the liquid,           and pull the string towards  under them.  This
  pinch it, and the        the corner of the sink.      is called surface
  liquid will rise         Turn on the water.  What     tension.  The
  up the straw.            does the water do?           dome of the water
  Lift the straw,                                       finally becomes so
  stop pinching it,                                     high that the water
  and the liquid                                        molecules can't
  flows out!                                            hold together, and
                                                        over they go!


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Science, Discovery, & Laughter video and guide book shows you how to stop
dreading science questions and start enjoying the discovery of answers.

$29.95, call 1-800-391-6939.  Allow 4-6 weeks for delivery.  30-day
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