Delta Science Module (DSMII), Chemical Intereaction
Review: Delta Science Module (DSMII), Chemical Interactions, is designed for middle school grades. It delves into atomic and molecular structure, density, and organic compounds such as fats. Some of the suggested work involves hands-on investigations while other activities are based on chemical models. There is also some introductory pencil and paper work on chemical equations which may be difficult for many 6th and 7th graders.
Other Information: Delta Science Module (DSMII), Chemical Interactions, grades 6-8, are available as a kit, refill or guide only ($399-$27.95 plus shipping) from Delta Education, PO Box 915, Hudson, NH 03051-0915. Call 800-442-5444, fax 800-282-9560, online: www.delta-ed.com
What do clean air, a nickel coin, and cran-apple juice have in common? They all can be defined as solutions. The difference between clean air, a nickel coin, and cran-apple juice lie in their state of matter.
While there are now approaches to assessment than can reduce reliance on conventional tests, such tests remain a significant form of evaluation in most schools. Here, Michael Calhoun suggests useful strategies for a hands-on lab test. he also sets an example for us all by interviewing some of his students to find out why their test results did not seem to reflect their actual skills and knowledge.