Attention - Shipping

The transition of our inventory to a new warehouse is taking longer than we anticipated. As a result, we are experiencing fulfillment delays and order(s) are taking longer to ship out. We are working hard to get the stock moved to our new facility as quickly as possible so that we are better equipped to meet your needs. We apologize for any inconvenience this may cause you.

attention

Cartesian Diver: A Transparent but Deceptive "Black Box"

by: Thomas O'Brien

An eyedropper “diver”—eyedropper, dropper, diver, and Cartesian diver are used interchangeable in this activity—can be made to float, sink, or remain suspended in the middle of a water-filled, capped, plastic 2 L soda bottle “on command” when the bottle is secretly squeezed or released. In this activity, a standard, overly simplistic and incorrect textbook explanation is challenged. The Cartesian diver serves as a fairly transparent black box-nature of science system to explore how focused observations (empirical evidence) and critical questions can lead (via logical argument and skeptical review) to an explanation that is at odds with the standard (incorrect) textbook explanation.

Level

Elementary SchoolMiddle SchoolHigh School

Details

Type Book ChapterPub Date 3/1/2010Stock # PB271X_32

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.

Learn More