Third graders read the article "Blue Claw," discuss crab migration, and look at a map of the Hudson River. They complete a worksheet where they must use subtraction to determine the distance migrating crabs travel.Web links, article, and...

Marine biology masters will meet the horseshoe crab and red knot shore birds that feast upon the crab eggs. Begin with a discussion and then have learners write postcards from each animal detailing their migration trips. A few math...