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Weekly  Challenge
April 28 - May 2, 2008

duck

The Jefferson Road duck is back in the nature center busily waiting for ducklings.  I was wondering how many ducks have hatched over the past three years, if each duck always lays 5 eggs that hatch.  Assume that ducklings are only hatched once a year.  Start with one duck the first year.  How many ducks are there after 3 years?
Hint: Draw a picture.



















For 4th and 5th grades:  When the ducklings leave the nature center, they walk about 3,000 feet to find water in the Erie Canal.  Is this greater than or less than a mile?______________  Why?