Sunday, March 7, 2010

Days of Play--Floaters and Sinkers Part II

So we accidentally came across this game last Saturday.

In the original floaters and sinkers, children guessed what items would sink in a tub of water and which would float.

This game follows the same idea but with air!

Here's what to do.

1.  Get a helium filled balloon with a long tail.
2.  Randomly grab little things that can be tied to the balloon (spoon, feather, sponge, pennies, whisk ...).
3.  Show your child how some objects cause the ballon to sink while others float with the balloon.
4.  For each item, have your child guess if it will cause the balloon to sink or float.
5.  Test your hypothesis!

To make this easier for younger kids:

Omit the guessing and just play with the balloon.

To make this harder for older kids:

Talk about mass and density.  Need a refresher?  Look here , among other places.  Talk about why the balloon floats.

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