| Answers to Excursion 2 at the bottom of this page. About the Newton's Window Weekly Math Challenge
Getting Started
Excursion 1
Excursion 2
Take me back to "go"... |
|
The U.S. Postal Service expected to handle 200
million pieces of mail on the Monday two weeks before Christmas. Just
how much is 200 million?
Suppose each one were a greeting card. How high would a stack of 200
million greeting cards be?
Obviously, greeting card thicknesses vary. To do this problem, measure
one and use that as an approximation for your figuring.
Happy stacking.......
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Answers to Excursion 2: Start both timers at the same time.
After 7 minutes, the 7-minute timer will be empty, but the 11 minute timer will
still be running. Leave it running, and flip over the 7 minute timer. When the
11 minute timer is empty, flip over the 7-minute timer. There will be 4
minutes worth of sand in the bottom, which will now be flipped to the top. When it
runs out, 15 minutes will have passed.
Ingenious, eh? |
