Case of the Rare Earth Elements - January 2021

Editor’s Roundtable: We’ve come a long way from the four elements

by: Inez Liftig

As our technology advanced, so has the sophistication of our classification systems. Over time, we’ve moved from the ancient Greeks’ four elements to the periodic table, and from classifying animals by the way they move to comparisons of their DNA sequences. Classification systems are an essential tool in all branches of science, but also help bring order to our everyday lives in the form of phone directories, library catalogs, bus schedules, supermarket aisles, and countless other ways. This issue of Science Scope has some interesting classification activities to build on the observation and classification basics that students bring with them from elementary school.

Level

Middle School

Details

Type Journal ArticlePub Date 2/1/2009Stock # ss09_032_06_1Volume 032Issue 06

NSTA Press produces classroom-ready activities, hands-on approaches to inquiry, relevant professional development, the latest scientific education news and research, assessment and standards-based instruction.

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