DEAR TEACHER.Our feature on "Frozen Science" is a "cool" tie-in tie-in n. One thing that is related to or connected with another. Noun 1. tie-in - a fastener that serves to join or connect; "the walls are held together with metal links placed in the wet mortar during construction" with lessons on the body's metabolism metabolism, sum of all biochemical processes involved in life. Two subcategories of metabolism are anabolism, the building up of complex organic molecules from simpler precursors, and catabolism, the breakdown of complex substances into simpler molecules, often and heat regulation, as well as the Earth science of avalanches (check out our miniposter). A history of timepieces and a glimpse at some strange structures people call home should also prove valuable tie-ins with Earth and physical/ technology science curricula. In the news: a special report on the Gatapagos oil spill oil spill: see water pollution. and an update on the earthquakes that recently rocked both El Salvador El Salvador (ĕl sälväthōr`), officially Republic of El Salvador, republic (2005 est. pop. 6,705,000), 8,260 sq mi (21,393 sq km), Central America. and India. We hope the issue serves your needs, and please feel free to send us your reactions, comments, and insights, as well as ideas you'd like us to cover next year. --The Editors e-mail: scienceworld @scholastic.com |
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